Small haifa-sched.c cleanup

[Thomas Koenig]

Here's a small fix for haifa-sched.c which eliminates an unneeded
initialization.  As can be seen from the patch, head and tail are both
initialized a little bit further down, so the initialization at the
beginning is wrong.

[Do I really need a ChangeLog entry for this kind of stuff?  If so, here
it is]

Tue Sep 30 21:38:51 CEST 1997

	* haifa-sched.c: (get_block_head_tail) Remove unneeded initialization
          from beginning

--- haifa-sched.c.orig	Tue Sep 30 21:18:31 1997
+++ haifa-sched.c	Tue Sep 30 21:18:51 1997
@@ -4808,16 +4808,16 @@
 __inline static void
 get_block_head_tail (bb, headp, tailp)
      int bb;
      rtx *headp;
      rtx *tailp;
 {
 
-  rtx head = *headp;
-  rtx tail = *tailp;
+  rtx head;
+  rtx tail;
   int b;
 
   b = BB_TO_BLOCK (bb);
 
   /* HEAD and TAIL delimit the basic block being scheduled.  */
   head = basic_block_head[b];
   tail = basic_block_end[b];