re PR tree-optimization/21096 (copy-prop leaks memory)

	PR tree-optimization/21096
	* tree-ssa-copy.c (fini_copy_prop): Free cached_last_copy_of.

From-SVN: r98405

gcc/ChangeLog

+2005-04-19  Kazu Hirata  <kazu@cs.umass.edu>
+
+	PR tree-optimization/21096
+	* tree-ssa-copy.c (fini_copy_prop): Free cached_last_copy_of.
+
 2005-04-19  Alan Modra  <amodra@bigpond.net.au>
 
 	PR target/21098

gcc/tree-ssa-copy.c

@@ -901,6 +901,7 @@ fini_copy_prop (void)
 
   substitute_and_fold (copy_of);
 
+  free (cached_last_copy_of);
   free (copy_of);
 }