Index: drush.inc
===================================================================
--- drush.inc	(revision 7078)
+++ drush.inc	(working copy)
@@ -406,6 +406,9 @@
       if ($array = db_fetch_array($result)) {
         return array_shift($array); // return first element in array.
       }
+      else {
+        return FALSE;
+      }
     case 6:
       return db_result($result);
     case 7: