Merge branch 'patch-1' into develop

Author: johnbillion

collectors/db_queries.php

@@ -236,7 +236,7 @@ public function process_db_object() {
 			'is_main_query' => true,
 		) );
 
-		$this->data->total_qs = count( $this->data->rows );
+		$this->data->total_qs = count( (array) $this->data->rows );
 		$this->data->total_time = $total_time;
 		$this->data->has_result = $has_result;
 		$this->data->has_trace = $has_trace;