added curely branches + reverted back to old behaviour (may come back one day)

Signed-off-by: Roland Haeder <roland@mxchange.org>

include/dfrn.php

@@ -1740,7 +1740,12 @@ class dfrn {
 			intval($importer["importer_uid"]));
 
 		if (!dbm::is_result($r)) {
+			/*
+			 * @TODO maybe one day:
+			logger("Query failed to execute, no result returned in " . __FUNCTION__);
 			killme();
+			*/
+			return false;
 		}
 
 		$old = $r[0];