Declare PerIDCache as IdentifierInfo** instead of void*.  This is just cleaner.  No performance change.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@60843 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Lex/PTHLexer.cpp b/lib/Lex/PTHLexer.cpp
index 9609930..a92d578 100644
--- a/lib/Lex/PTHLexer.cpp
+++ b/lib/Lex/PTHLexer.cpp
@@ -236,7 +236,7 @@
 //===----------------------------------------------------------------------===//
 
 PTHManager::PTHManager(const llvm::MemoryBuffer* buf, void* fileLookup,
-                       const char* idDataTable, void* perIDCache, 
+                       const char* idDataTable, IdentifierInfo** perIDCache, 
                        Preprocessor& pp)
 : Buf(buf), PerIDCache(perIDCache), FileLookup(fileLookup),
   IdDataTable(idDataTable), ITable(pp.getIdentifierTable()), PP(pp) {}
@@ -324,7 +324,7 @@
   --persistentID;
   
   // Check if the IdentifierInfo has already been resolved.
-  IdentifierInfo*& II = ((IdentifierInfo**) PerIDCache)[persistentID];
+  IdentifierInfo*& II = PerIDCache[persistentID];
   if (II) return II;
   
   // Look in the PTH file for the string data for the IdentifierInfo object.