Fix test memory_resource to work without sized deallocation

The checking memory_resource in the testsuite assumes sized deallocation
is supported, which might not be true for other compilers.

	* testsuite/util/testsuite_allocator.h (__gnu_test::memory_resource)
	[!__cpp_sized_deallocation]: Do not pass size to operator delete.

From-SVN: r269312

libstdc++-v3/ChangeLog

 2019-03-01  Jonathan Wakely  <jwakely@redhat.com>
 
+	* testsuite/util/testsuite_allocator.h (__gnu_test::memory_resource)
+	[!__cpp_sized_deallocation]: Do not pass size to operator delete.
+
 	* include/std/memory (uses_allocator_construction_args): New set of
 	overloaded functions.
 	(make_obj_using_allocator, uninitialized_construct_using_allocator):

libstdc++-v3/testsuite/util/testsuite_allocator.h

@@ -780,7 +780,11 @@ namespace __gnu_test
 		  throw bad_size();
 		if (alignment != a->alignment)
 		  throw bad_alignment();
+#if __cpp_sized_deallocation
 		::operator delete(p, bytes, std::align_val_t(alignment));
+#else
+		::operator delete(p, std::align_val_t(alignment));
+#endif
 		*aptr = a->next;
 		a->next = lists->freed;
 		lists->freed = a;