[TIPC]: Fix misleading comment in buf_discard() routine.

Signed-off-by: NAllan Stephens <allan.stephens@windriver.com>
Signed-off-by: NPer Liden <per.liden@ericsson.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>

net/tipc/core.h

@@ -318,7 +318,7 @@ static inline struct sk_buff *buf_acquire(u32 size)
  * buf_discard - frees a TIPC message buffer
  * @skb: message buffer
  *
- * Frees a new buffer.  If passed NULL, just returns.
+ * Frees a message buffer.  If passed NULL, just returns.
  */
 
 static inline void buf_discard(struct sk_buff *skb)