Fix test so that it XFAILs consistently.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@143771 91177308-0d34-0410-b5e6-96231b3b80d8

test/CodeGen/2009-02-13-zerosize-union-field-ppc.c

-// RUN: %clang_cc1 %s -m32 -emit-llvm -o - | grep {i32 32} | count 3
+// RUN: %clang_cc1 %s -triple powerpc-pc-linux -emit-llvm -o - | grep {i32 32} | count 3
 // XFAIL: *
-// XTARGET: powerpc
 //  Every printf has 'i32 0' for the GEP of the string; no point counting those.
 typedef unsigned int Foo __attribute__((aligned(32)));
 typedef union{Foo:0;}a;