[PATCH] Modules: Error on missing header files only if a module is built/used.

[Richard Smith]

  Looks good.


================
Comment at: include/clang/Basic/Module.h:101
@@ +100,3 @@
+
+  /// \brief Headers that are mentioned in the module map file bug could not be
+  /// found on the file system.
----------------
s/bug/but/


http://llvm-reviews.chandlerc.com/D2352