[cleanup] Remove excessive padding from TextTokenRetokenizer::Position

Reorder the fields of the struct TextTokenRetokenizer::Position to remove excessive padding.
Test plan: make -j8 check-clang

Differential revision: https://reviews.llvm.org/D24751

llvm-svn: 281995

clang/lib/AST/CommentParser.cpp

@@ -40,11 +40,11 @@ class TextTokenRetokenizer {
 
   /// A position in \c Toks.
   struct Position {
-    unsigned CurToken;
     const char *BufferStart;
     const char *BufferEnd;
     const char *BufferPtr;
     SourceLocation BufferStartLoc;
+    unsigned CurToken;
   };
 
   /// Current position in Toks.