Update tokenize.cpp

Author: chrchr-github

lib/tokenize.cpp

@@ -3341,12 +3341,14 @@ bool Tokenizer::simplifyUsing()
                     }
                 } else if (fpArgList && fpQual && Token::Match(tok1->next(), "%name%")) {
                     // function pointer
+                    const bool isFuncDecl = Token::simpleMatch(tok1->tokAt(2), "(");
                     TokenList::copyTokens(tok1->next(), fpArgList, usingEnd->previous());
                     Token* const copyEnd = TokenList::copyTokens(tok1, start, fpQual->link()->previous());
                     Token* leftPar = copyEnd->previous();
                     while (leftPar->str() != "(")
                         leftPar = leftPar->previous();
-                    Token* const rightPar = copyEnd->next()->insertToken(")");
+                    Token* const insertTok = isFuncDecl ? copyEnd->linkAt(2) : copyEnd->next();
+                    Token* const rightPar = insertTok->insertToken(")");
                     Token::createMutualLinks(leftPar, rightPar);
                     tok1->deleteThis();
                     substitute = true;