Bug 238506: Fix checksetup.pl so that it does not fail if an upgrading site…

checksetup.pl

@@ -3499,6 +3499,7 @@ if (GetFieldDef("profiles", "groupset")) {
     $sth->execute();
     my ($gsid) = $sth->fetchrow_array;
     # Get all bugs_activity records from groupset changes
+    if ($gsid) {
         $sth = $dbh->prepare("SELECT bug_id, bug_when, who, added, removed
                               FROM bugs_activity WHERE fieldid = $gsid");
         $sth->execute();
@@ -3582,7 +3583,7 @@ if (GetFieldDef("profiles", "groupset")) {
                       " AND who = $uwho AND fieldid = $gsid");
     
         }
-
+    }
     # Identify admin group.
     my $sth = $dbh->prepare("SELECT id FROM groups 
                 WHERE name = 'admin'");