Fix bootstrap failure in Ada FE due to -Werror=ignored-qualifiers

	* gcc-interface/utils2.c (compare_elmt_bitpos): Remove redundant
	const qualifiers that cause -Wignored-qualifiers warnings.

From-SVN: r248458

gcc/ada/ChangeLog

+2017-05-25  Jonathan Wakely  <jwakely@redhat.com>
+
+	* gcc-interface/utils2.c (compare_elmt_bitpos): Remove redundant
+	const qualifiers that cause -Wignored-qualifiers warnings.
+
 2017-05-22  Eric Botcazou  <ebotcazou@adacore.com>
 
 	* gcc-interface/decl.c (gnat_to_gnu_entity): Skip regular processing

gcc/ada/gcc-interface/utils2.c

@@ -1934,8 +1934,8 @@ build_call_raise_range (int msg, Node_Id gnat_node, char kind,
 static int
 compare_elmt_bitpos (const PTR rt1, const PTR rt2)
 {
-  const constructor_elt * const elmt1 = (const constructor_elt * const) rt1;
-  const constructor_elt * const elmt2 = (const constructor_elt * const) rt2;
+  const constructor_elt * const elmt1 = (const constructor_elt *) rt1;
+  const constructor_elt * const elmt2 = (const constructor_elt *) rt2;
   const_tree const field1 = elmt1->index;
   const_tree const field2 = elmt2->index;
   const int ret