Fix unused variable warning.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@99021 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/CIndex/CIndex.cpp b/tools/CIndex/CIndex.cpp
index 0888216..1000818 100644
--- a/tools/CIndex/CIndex.cpp
+++ b/tools/CIndex/CIndex.cpp
@@ -457,8 +457,7 @@
       return true;
 
     // Walk the preprocessing record.
-    if (PreprocessingRecord *PPRec
-                       = CXXUnit->getPreprocessor().getPreprocessingRecord()) {
+    if (CXXUnit->getPreprocessor().getPreprocessingRecord()) {
       // FIXME: Once we have the ability to deserialize a preprocessing record,
       // do so.
       PreprocessingRecord::iterator E, EEnd;