From b4c119915bb720f6488d485a194cab84e7efe3db Mon Sep 17 00:00:00 2001
From: Johan Wikman <johan.wikman@mariadb.com>
Date: Thu, 30 Mar 2017 21:49:57 +0300
Subject: [PATCH] Fix gwbuf_rtrim

- If everything in the first buffer of a buffer chain is consumed,
  then the whole chain and not just the first buffer was freed.

NOTE: gwbuf_rtrim needs to be fixed so that it removes data from the
      tail of a chain and *not* from the end of the first buffer in
      a chain. That cannot ever be what is wanted.
---
 server/core/buffer.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/server/core/buffer.c b/server/core/buffer.c
index ddf3e24bf..cb10df951 100644
--- a/server/core/buffer.c
+++ b/server/core/buffer.c
@@ -640,7 +640,7 @@ gwbuf_rtrim(GWBUF *head, unsigned int n_bytes)
     if (GWBUF_EMPTY(head))
     {
         rval = head->next;
-        gwbuf_free(head);
+        gwbuf_free_one(head);
     }
     return rval;
 }