Forgot to remove this un-needed test. (M_WAITOK won't fail)

I vaguely remember someone once proving it COULD return NULL..
was that changed?

Reminded by: BDE

MFC after:	2 weeks

sys/kern/uipc_mbuf.c

@@ -303,7 +303,7 @@ nospace:
  * continuing for "len" bytes, into the indicated buffer.
  */
 void
-m_copydata(struct mbuf *m, int off, int len, caddr_t cp)
+m_copydata(const struct mbuf *m, int off, int len, caddr_t cp)
 {
 	unsigned count;
 

sys/kern/uipc_usrreq.c

@@ -855,8 +855,6 @@ unp_pcblist(SYSCTL_HANDLER_ARGS)
 	}
 
 	unp_list = malloc(n * sizeof *unp_list, M_TEMP, M_WAITOK);
-	if (unp_list == 0)
-		return ENOMEM;
 	
 	for (unp = LIST_FIRST(head), i = 0; unp && i < n;
 	     unp = LIST_NEXT(unp, unp_link)) {