For the FileChanged Preprocessor callback, when exiting a file, pass its FileID.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@141681 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Lex/PPLexerChange.cpp b/lib/Lex/PPLexerChange.cpp
index 8ba2df9..25a98ae 100644
--- a/lib/Lex/PPLexerChange.cpp
+++ b/lib/Lex/PPLexerChange.cpp
@@ -256,6 +256,10 @@
       SourceMgr.setNumCreatedFIDsForFileID(CurPPLexer->getFileID(), NumFIDs);
     }
 
+    FileID ExitedFID;
+    if (Callbacks && !isEndOfMacro && CurPPLexer)
+      ExitedFID = CurPPLexer->getFileID();
+    
     // We're done with the #included file.
     RemoveTopOfLexerStack();
 
@@ -264,7 +268,7 @@
       SrcMgr::CharacteristicKind FileType =
         SourceMgr.getFileCharacteristic(CurPPLexer->getSourceLocation());
       Callbacks->FileChanged(CurPPLexer->getSourceLocation(),
-                             PPCallbacks::ExitFile, FileType);
+                             PPCallbacks::ExitFile, FileType, ExitedFID);
     }
 
     // Client should lex another token.