Fixing build bustage. Incorrect usage "foreach my $foo qw(bar baz)" where the qw construct needs to be surrounded by parentheses.

webtools/bugzilla/userprefs.cgi

@@ -239,7 +239,7 @@ sub SaveEmail {
         $updateString .= 'ExcludeSelf~';
     }
     
-    foreach my $flag qw(FlagRequestee FlagRequester) {
+    foreach my $flag (qw(FlagRequestee FlagRequester)) {
         $updateString .= "~$flag~" . (defined($::FORM{$flag}) ? "on" : "");
     }