The design consists of the features of shape and configuration applied to a lock-out insert for a dispenser closure as shown in solid lines in the attacheddrawings, with variants.Drawings of the design are included wherein:FIGURE 1 is a perspective view of the article to which the design is applied, namely, a lock-out insert for a dispenser closure;FIGURE 2 is a top view thereof;FIGURE 3 is a bottom view thereof;FIGURE 4 is a side view thereof;FIGURE 5 is a side view thereof opposite to that shown in Figure 4;FIGURE 6 is a side view thereof rotated 90° from that shown in Figure 4;FIGURE 7 is side view thereof opposite to that shown in Figure 6;FIGURE 8 is a perspective view of a first variant of the design;FIGURE 9 is a top view of the first variant;FIGURE 10 is a bottom view of the first variant;FIGURE 11 is a side view of the first variant;FIGURE 12 is a back view of the first variant opposite to that shown in Figure 11;FIGURE 13 is a side view of the first variant rotated 90° from that shown in Figure 11;FIGURE 14 is a side view of the first variant opposite to that shown in Figure 13;FIGURE 15 is a perspective view of a second variant of the design;FIGURE 16 is a top view of the second variant;FIGURE 17 is a bottom view of the second variant;FIGURE 18 is a side view of the second variant:FIGURE 19 is a back view of the second variant opposite to that shown in Figure 18;FIGURE 20 is a side view of the second variant rotated 90° from that shown inFigure 18;FIGURE 21 is a side view of the second variant opposite to that shown in Figure 20;FIGURE 22 is a perspective view of a third variant of the design:FIGURE 23 is a top view of the third variant;FIGURE 24 is a bottom view of the third variant;FIGURE 25 is a side view of the third variant;FIGURE 26 is a back view of the third variant opposite to that shown in Figure 25;FIGLTRE 27 is a side view of the third variant rotated 90' from that shown in Figure 25;FIGURE 28 is a side view of the third variant opposite to that shown in Figure 27;FIGURE 29 is a perspective view of a fourth variant of the design;FIGURE 30 is a top view of the fourth variant;FIGURE 31 is a bottom view of the fourth variant;FIGURE 32 is a side view of the fourth variant;FIGURE 33 is a back view of the fourth variant opposite to that shown in Figure 32;FIGURE 34 is a side view of the fourth variant rotated 90' from that shown inFigure 32;FIGURE 35 is a side view of the fourth variant opposite to that shown in Figure 34;FIGURE 36 is a perspective view of a fifth variant of the design:FIGURE 37 is a top view of the fifth variant;FIGURE 38 is a bottom view of the fifth variant;FIGURE 39 is a side view of the fifth variant;FIGURE 40 is a back view of the fifth variant opposite to that shown in Figure 39;FIGURE 41 is a side view of the fifth variant rotated 90° from that shown in Figure 39;FIGURE 42 is a side view of the fifth variant opposite to that shown in Figure 41;FIGURE 43 is a perspective view of a sixth variant of the design;FIGURE 44 is a top view of the sixth variant;FIGLIRE 45 is a bottom view of the sixth variant;FIGURE 46 is a side view of the sixth variant;FIGURE 47 is a back view of the sixth variant opposite to that shown in Figure 46;FIGURE 48 is a side view of the sixth variant rotated 90' from that shown in Figure 46;FIGURE 49 is a side view of the sixth variant opposite to that shown in Figure 48;FIGURE 50 is a perspective view of a seventh variant of the design;FIGURE 51 is a top view of the seventh variant;FIGURE 52 is a bottom view of the seventh variant;FIGURE 53 is a side view of the seventh variant;FIGURE 54 is a back view of the seventh variant opposite to that shown in Figure 53;FIGURE 55 is a side view of the seventh variant rotated 90° from that shown in Figure 53;FIGURE 56 is a side view of the seventh variant opposite to that shown in Figure 55;FIGURE 57 is a perspective view of a eighth variant of the design;FIGURE 58 is a top view of the eighth variant;FIGURE 59 is a bottom view of the eighth variant;FIGURE 60 is a side view of the eighth variant;FIGURE 61 is a back view of the eighth variant opposite to that shown in Figure 60;FIGURE 62 is a side view of the eighth variant rotated 90° from that shown inFigure 60;FIGURE 63 is a side view of the eighth variant opposite to that shown in Figure 62;FIGURE 64 is a perspective view of a ninth variant of the design:FIGURE 65 is a top view of the ninth variant;FIGURE 66 is a bottom view of the ninth variant;FIGURE 67 is a side view of the ninth variant;FIGURE 68 is a back view of the ninth variant opposite to that shown in Figure 67;FIGURE 69 is a side view of the ninth variant rotated 90' from that shown in Figure 67;FIGURE 70 is a side view of the ninth variant opposite to that shown in Figure 69;FIGURE 71 is a perspective view of a tenth variant of the design;FIGURE 72 is a top view of the tenth variant;FIGURE 73 is a bottom view of the tenth variant;FIGURE 74 is a side view of the tenth variant;FIGURE 75 is a back view of the tenth variant opposite to that shown in Figure 74;FIGURE 76 is a side view of the tenth variant rotated 90' from that shown in Figure 74; andFIGURE 77 is a side view of the tenth variant opposite to that shown in Figure 76.