[tree-ssa] Fix alpha bootstrap

[Diego Novillo]

Another case of variables not initialized in every path.


	* cfgcleanup.c (try_crossjump_to_edge): Initialize newpos1 and
	newpos2.


Index: cfgcleanup.c
===================================================================
RCS file: /cvs/gcc/gcc/gcc/cfgcleanup.c,v
retrieving revision 1.62.2.15
diff -d -u -p -r1.62.2.15 cfgcleanup.c
--- cfgcleanup.c	28 Sep 2003 06:06:07 -0000	1.62.2.15
+++ cfgcleanup.c	21 Nov 2003 21:23:11 -0000
@@ -1390,6 +1390,8 @@ try_crossjump_to_edge (int mode, edge e1
   rtx newpos1, newpos2;
   edge s;
 
+  newpos1 = newpos2 = NULL_RTX;
+
   /* Search backward through forwarder blocks.  We don't need to worry
      about multiple entry or chained forwarders, as they will be optimized
      away.  We do this to look past the unconditional jump following a