Introduce Preprocessor::getTotalMemory() and use it in CIndex.cpp, no functionality change.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@134103 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/libclang/CIndex.cpp b/tools/libclang/CIndex.cpp
index 49b02c4..3f9d34f 100644
--- a/tools/libclang/CIndex.cpp
+++ b/tools/libclang/CIndex.cpp
@@ -5400,10 +5400,9 @@
   
   // How much memory is being used by the Preprocessor?
   Preprocessor &pp = astUnit->getPreprocessor();
-  const llvm::BumpPtrAllocator &ppAlloc = pp.getPreprocessorAllocator();
   createCXTUResourceUsageEntry(*entries,
                                CXTUResourceUsage_Preprocessor,
-                               ppAlloc.getTotalMemory());
+                               pp.getTotalMemory());
   
   if (PreprocessingRecord *pRec = pp.getPreprocessingRecord()) {
     createCXTUResourceUsageEntry(*entries,