[Fortran] PR 63701 Make sure variable is always used initialised

	PR fortran/63701
	* trans-expr.c (gfc_get_tree_for_caf_expr): Initialise found to false.

From-SVN: r217345

gcc/fortran/ChangeLog

+2014-11-11  Kyrylo Tkachov  <kyrylo.tkachov@arm.com>
+
+	PR fortran/63701
+	* trans-expr.c (gfc_get_tree_for_caf_expr): Initialise found to false.
+
 2014-11-10  Janne Blomqvist  <jb@gcc.gnu.org>
 
 	PR libfortran/47007

gcc/fortran/trans-expr.c

@@ -1406,7 +1406,7 @@ tree
 gfc_get_tree_for_caf_expr (gfc_expr *expr)
 {
   tree caf_decl;
-  bool found;
+  bool found = false;
   gfc_ref *ref;
 
   gcc_assert (expr && expr->expr_type == EXPR_VARIABLE);