Fix bug in the new PCHReader constructor. PP and Context should be initialized to 0.


git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@73762 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Frontend/PCHReader.cpp b/lib/Frontend/PCHReader.cpp
index 3c6e9bb..96f21f1 100644
--- a/lib/Frontend/PCHReader.cpp
+++ b/lib/Frontend/PCHReader.cpp
@@ -350,7 +350,7 @@
 PCHReader::PCHReader(SourceManager &SourceMgr, FileManager &FileMgr,
                      Diagnostic &Diags) 
   : SourceMgr(SourceMgr), FileMgr(FileMgr), Diags(Diags),
-    SemaObj(0), PP(PP), Context(Context), Consumer(0),
+    SemaObj(0), PP(0), Context(0), Consumer(0),
     IdentifierTableData(0), IdentifierLookupTable(0),
     IdentifierOffsets(0),
     MethodPoolLookupTable(0), MethodPoolLookupTableData(0),