tests: Force a triple to avoid wchar_t differences.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@115970 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/CodeGen/string-literal.c b/test/CodeGen/string-literal.c
index 457ff6c..43bfc21 100644
--- a/test/CodeGen/string-literal.c
+++ b/test/CodeGen/string-literal.c
@@ -1,4 +1,4 @@
-// RUN: %clang_cc1 -emit-llvm %s -o - | FileCheck %s
+// RUN: %clang_cc1 -triple i386-unknown-unknown -emit-llvm %s -o - | FileCheck %s
 
 int main() {
   // CHECK: internal constant [10 x i8] c"abc\00\00\00\00\00\00\00", align 1