Fix stdio module build on OS X

llvm-svn: 288778
Cr-Mirrored-From: sso://chromium.googlesource.com/_direct/external/github.com/llvm/llvm-project
Cr-Mirrored-Commit: 4facc13108b9ae57caed8690ee4185387cf4d0fb
diff --git a/include/module.modulemap b/include/module.modulemap
index 04b38dc..13fa499 100644
--- a/include/module.modulemap
+++ b/include/module.modulemap
@@ -56,6 +56,7 @@
       // <stdio.h>'s __need_* macros require textual inclusion.
       textual header "stdio.h"
       export *
+      export Darwin.C.stdio
     }
     module stdlib_h {
       // <stdlib.h>'s __need_* macros require textual inclusion.
@@ -192,6 +193,7 @@
     // FIXME: <cuchar> is missing.
     module cwchar {
       header "cwchar"
+      export depr.stdio_h
       export *
     }
     module cwctype {