mpx-dg.exp: Fix warning in check_effective_target_mpx test.

gcc/testsuite/

	* lib/mpx-dg.exp: Fix warning in check_effective_target_mpx
	test.

From-SVN: r233333

gcc/testsuite/ChangeLog

+2016-02-11  Ilya Enkovich  <enkovich.gnu@gmail.com>
+
+	* lib/mpx-dg.exp: Fix warning in check_effective_target_mpx
+	test.
+
 2016-02-11  Richard Biener  <rguenther@suse.de>
 
 	* g++.dg/tree-ssa/pr61034.C: Adjust.

gcc/testsuite/lib/mpx-dg.exp

@@ -22,7 +22,7 @@ proc check_effective_target_mpx {} {
 	int *foo (int *arg) { return arg; }
 	int main (void)
 	{
-	    int *p = __builtin_malloc (sizeof (int));
+	    int *p = (int *)__builtin_malloc (sizeof (int));
 	    int res = foo (p) == 0;
 	    __builtin_free (p);
 	    return res;