write_graphite plugin: Unlock mutex before destroying it.

CID: 179225

diff --git a/src/write_graphite.c b/src/write_graphite.c
index b85ab47..13adff5 100644 (file)
--- a/src/write_graphite.c
+++ b/src/write_graphite.c
@@ -312,6 +312,7 @@ static void wg_callback_free(void *data) {
   sfree(cb->prefix);
   sfree(cb->postfix);
 
+  pthread_mutex_unlock(&cb->send_lock);
   pthread_mutex_destroy(&cb->send_lock);
 
   sfree(cb);