Refactoring: always kill AOF/RDB child via helper functions.

src/rdb.c

@@ -2225,6 +2225,16 @@ void backgroundSaveDoneHandler(int exitcode, int bysignal) {
     }
 }
 
+/* Kill the RDB saving child using SIGUSR1 (so that the parent will know
+ * the child did not exit for an error, but because we wanted), and performs
+ * the cleanup needed. */
+void killRDBChild(void) {
+    kill(server.rdb_child_pid,SIGUSR1);
+    rdbRemoveTempFile(server.rdb_child_pid);
+    closeChildInfoPipe();
+    updateDictResizePolicy();
+}
+
 /* Spawn an RDB child that writes the RDB to the sockets of the slaves
  * that are currently in SLAVE_STATE_WAIT_BGSAVE_START state. */
 int rdbSaveToSlavesSockets(rdbSaveInfo *rsi) {