Fix minor coding style issue in r190296 pointed out by Richard Smith.

llvm-svn: 190390
diff --git a/clang/lib/Basic/TargetInfo.cpp b/clang/lib/Basic/TargetInfo.cpp
index 38cb411..3feaf9e 100644
--- a/clang/lib/Basic/TargetInfo.cpp
+++ b/clang/lib/Basic/TargetInfo.cpp
@@ -248,10 +248,10 @@
     LongDoubleWidth = LongDoubleAlign = 128;
 
     assert(PointerWidth == 32 || PointerWidth == 64);
-    bool is32BitArch = PointerWidth == 32;
-    SizeType = is32BitArch ? UnsignedInt : UnsignedLong;
-    PtrDiffType = is32BitArch ? SignedInt : SignedLong;
-    IntPtrType = is32BitArch ? SignedInt : SignedLong;
+    bool Is32BitArch = PointerWidth == 32;
+    SizeType = Is32BitArch ? UnsignedInt : UnsignedLong;
+    PtrDiffType = Is32BitArch ? SignedInt : SignedLong;
+    IntPtrType = Is32BitArch ? SignedInt : SignedLong;
 
     IntMaxType = SignedLongLong;
     UIntMaxType = UnsignedLongLong;