[AArch64] Fix gcc.target/aarch64/c-output-template-3.c

gcc.target/aarch64/c-output-template-3.c: Add -O, remove
	-Wno-pointer-arith.

From-SVN: r221905

gcc/testsuite/ChangeLog

@@ -1,3 +1,8 @@
+2015-04-07  Alan Lawrence  <alan.lawrence@arm.com>
+
+	* gcc.target/aarch64/c-output-template-3.c: Add -O, remove
+	-Wno-pointer-arith.
+
 2015-04-07  Jakub Jelinek  <jakub@redhat.com>
 
 	PR debug/65678

gcc/testsuite/gcc.target/aarch64/c-output-template-3.c

@@ -1,5 +1,5 @@
 /* { dg-do compile } */
-/* { dg-options "-Wno-pointer-arith" } */
+/* { dg-options "-O" } */
 
 void
 test (void)