Add missing header file for the test.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@134927 91177308-0d34-0410-b5e6-96231b3b80d8

diff --git a/test/Preprocessor/warn-macro-unused.h b/test/Preprocessor/warn-macro-unused.h
new file mode 100644 (file)
index 0000000..0c2c267
--- /dev/null
+++ b/test/Preprocessor/warn-macro-unused.h
@@ -0,0 +1 @@
+#define unused_from_header