Try to generalize the match to quiet the windows build bot.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@136162 91177308-0d34-0410-b5e6-96231b3b80d8

test/CodeGen/2007-03-27-VarLengthArray.c

@@ -1,6 +1,6 @@
 // RUN: %clang_cc1 -emit-llvm %s -o - | FileCheck %s
 
-// CHECK: getelementptr inbounds i32* %vla
+// CHECK: getelementptr inbounds i32* %{{vla|[0-9]}}
 extern void f(int *);
 int e(int m, int n) {
   int x[n];