Merge "RCDatabaseLogEntry: add a method to get the last rev_id"

includes/logging/RCDatabaseLogEntry.php

@@ -41,6 +41,16 @@ class RCDatabaseLogEntry extends DatabaseLogEntry {
 		return $this->row->rc_this_oldid;
 	}
 
+	/**
+	 * Get the rev_id associated to the parent revision
+	 * @since 1.35
+	 *
+	 * @return string
+	 */
+	public function getParentRevId() {
+		return $this->row->rc_last_oldid;
+	}
+
 	public function getType() {
 		return $this->row->rc_log_type;
 	}