C++: fix tooltip for constantValue of enumeratorDeclaration

E.g.:
enum E { x = 1 + 2 + 1 };

constantValue for enumeratorDeclaration currently is equal: '1+2+1'
(spaces between are removed).
Fixed version produces "1 + 2 + 1".

Change-Id: I38f7703bd5c856c28aadeecd7f7923aa4a7da422
Reviewed-by: Nikolai Kosjar <nikolai.kosjar@digia.com>

src/libs/3rdparty/cplusplus/Bind.h

@@ -105,8 +105,7 @@ protected:
     void capture(CaptureAST *ast);
     void lambdaDeclarator(LambdaDeclaratorAST *ast);
     FullySpecifiedType trailingReturnType(TrailingReturnTypeAST *ast, const FullySpecifiedType &init);
-    const StringLiteral *asStringLiteral(unsigned firstToken, unsigned lastToken,
-                                         bool addWhitespace = true);
+    const StringLiteral *asStringLiteral(unsigned firstToken, unsigned lastToken);
 
     virtual bool preVisit(AST *);
     virtual void postVisit(AST *);