[Support] Try to unbreak windows buildbot

After r359179.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@359183 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/unittests/Support/AnnotationsTest.cpp b/unittests/Support/AnnotationsTest.cpp
index bf66f17..b2970ad 100644
--- a/unittests/Support/AnnotationsTest.cpp
+++ b/unittests/Support/AnnotationsTest.cpp
@@ -105,7 +105,7 @@
 
   // Parsing failures.
   EXPECT_DEATH(llvm::Annotations("ff[[fdfd"), "unmatched \\[\\[");
-  EXPECT_DEATH(llvm::Annotations("ff[[fdjsfjd]]xxx]]"), "unmatched ]]");
+  EXPECT_DEATH(llvm::Annotations("ff[[fdjsfjd]]xxx]]"), "unmatched \\]\\]");
   EXPECT_DEATH(llvm::Annotations("ff$fdsfd"), "unterminated \\$name");
 #endif
 }