Redis feedAppendOnlyFile return ASAP

Locating at: https://github.com/redis/redis/blob/e92363e248019b8bf3fc7dd8ce84f648b6b13473/src/aof.c#L1340

I think it could be put at the entrance of this function, so it could be fail ASAP if AOF_OFF.

It maybe looks like as:

void feedAppendOnlyFile(int dictid, robj ** argv, int argc) {
    if (server.aof_state != AOF_ON &&
        (server.aof_state != AOF_WAIT_REWRITE || server.child_type != CHILD_TYPE_AOF))
    {
        return;
    }
    // todo
}