Index: src/wp-includes/wp-db.php
===================================================================
--- src/wp-includes/wp-db.php	(revision 52305)
+++ src/wp-includes/wp-db.php	(working copy)
@@ -2798,6 +2798,7 @@
 	 */
 	public function get_results( $query = null, $output = OBJECT ) {
 		$this->func_call = "\$db->get_results(\"$query\", $output)";
+		$query_success   = false;
 
 		if ( $query ) {
 			if ( $this->check_current_query && $this->check_safe_collation( $query ) ) {
@@ -2804,8 +2805,10 @@
 				$this->check_current_query = false;
 			}
 
-			$this->query( $query );
-		} else {
+			$query_success = $this->query( $query );
+		}
+
+		if ( false === $query_success ) {
 			return null;
 		}