simplify PTHManager::CreateLexer


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@62424 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Lex/PPLexerChange.cpp b/lib/Lex/PPLexerChange.cpp
index 60d4238..f8c8636 100644
--- a/lib/Lex/PPLexerChange.cpp
+++ b/lib/Lex/PPLexerChange.cpp
@@ -74,7 +74,7 @@
     MaxIncludeStackDepth = IncludeMacroStack.size();
 
   if (PTH) {
-    if (PTHLexer *PL = PTH->CreateLexer(FID, SourceMgr.getFileEntryForID(FID)))
+    if (PTHLexer *PL = PTH->CreateLexer(FID))
       return EnterSourceFileWithPTH(PL, CurDir);
   }
   EnterSourceFileWithLexer(new Lexer(FID, *this), CurDir);