finish stubbing out support for HeaderMap.  Now we just need an implementation!


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@45094 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/Lex/HeaderSearch.cpp b/Lex/HeaderSearch.cpp
index 3489de5..1d79eff 100644
--- a/Lex/HeaderSearch.cpp
+++ b/Lex/HeaderSearch.cpp
@@ -100,7 +100,8 @@
   if (isFramework())
     return DoFrameworkLookup(FilenameStart, FilenameEnd, HS);
   
-  assert(0 && "headermap unimp");
+  assert(isHeaderMap() && "Unknown directory lookup");
+  return getHeaderMap()->LookupFile(FilenameStart, FilenameEnd,HS.getFileMgr());
 }