Attempt to fix Windows build breakage.

llvm-svn: 174060
diff --git a/clang/tools/libclang/Indexing.cpp b/clang/tools/libclang/Indexing.cpp
index 6f01a0b..e8977e0 100644
--- a/clang/tools/libclang/Indexing.cpp
+++ b/clang/tools/libclang/Indexing.cpp
@@ -55,7 +55,8 @@
 class TUSkipBodyControl {
 public:
   TUSkipBodyControl(SessionSkipBodyData &sessionData,
-                    PPConditionalDirectiveRecord &ppRec) { }
+                    PPConditionalDirectiveRecord &ppRec,
+                    Preprocessor &pp) { }
   bool isParsed(SourceLocation Loc, FileID FID, const FileEntry *FE) {
     return false;
   }