get rid of undefined warning

webtools/bugzilla/syncshadowdb

@@ -35,7 +35,7 @@ sub sillyness {
 }
 
 my $verbose = 0;
-if ($ARGV[0] eq '-v') {
+if ($#ARGV > 0 && $ARGV[0] eq '-v') {
     $verbose = 1;
 }
 $| = 1;