Force triple in tests.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@84257 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/MC/AsmParser/variables.s b/test/MC/AsmParser/variables.s
index 86fea27..cb004d7 100644
--- a/test/MC/AsmParser/variables.s
+++ b/test/MC/AsmParser/variables.s
@@ -1,4 +1,4 @@
-// RUN: llvm-mc %s
+// RUN: llvm-mc -triple i386-unknown-unknown %s
 
         .data
         t0_v0 = 1