CA-342578: fix switch case fall through error

Signed-off-by: Mark Syms <mark.syms@citrix.com>

Author: MarkSymsCtx

vhd/lib/vhd-util-snapshot.c

@@ -150,6 +150,7 @@ vhd_util_snapshot(int argc, char **argv)
 			break;
 		case 'S':
 			msize = strtoull(optarg, NULL, 10);
+			break;
 		case 'l':
 			limit = strtol(optarg, NULL, 10);
 			break;