Fix more Windows bots after r360015.

Depending on the environment, the directory separator might
appear as \ or \\ on different bots.

http://lab.llvm.org:8011/builders/llvm-clang-x86_64-expensive-checks-win/builds/17446/steps/test-check-all/logs/stdio

llvm-svn: 360065

llvm/test/DebugInfo/symbolize-directory.s

@@ -3,8 +3,8 @@
 # RUN: llvm-mc -filetype=obj -triple=x86_64 -dwarf-version=5 %s -o %t.o
 # RUN: llvm-symbolizer --obj=%t.o --functions=none 0 1 | FileCheck %s
 
-# CHECK: /home{{/|\\\\}}0.cc:1:0
-# CHECK: /tmp{{/|\\\\}}1.cc:2:1
+# CHECK: /home{{/|\\|\\\\}}0.cc:1:0
+# CHECK: /tmp{{/|\\|\\\\}}1.cc:2:1
 
 .Lfunc_begin0:
   .file 0 "/home" "0.cc"