qcacmn: fix double nbuf allocation false positive

In qdf_nbuf_queue_free API __qdf_nbuf_free API is
called to free the nbuf which is not clearing the debug
node instead call qdf_nbuf_free API to delete the nbuf
debug node and free nbuf

Change-Id: I34f06a440ce7758d4ea02fbd1d696366460aa871

qdf/inc/qdf_nbuf.h

@@ -2203,7 +2203,10 @@ qdf_nbuf_queue_append(qdf_nbuf_queue_t *dest, qdf_nbuf_queue_t *src)
 static inline void
 qdf_nbuf_queue_free(qdf_nbuf_queue_t *head)
 {
-	__qdf_nbuf_queue_free(head);
+	qdf_nbuf_t  buf = NULL;
+
+	while ((buf = qdf_nbuf_queue_remove(head)) != NULL)
+		qdf_nbuf_free(buf);
 }
 
 static inline qdf_nbuf_t