refs #14593 - tokenize.cpp: impoved concatination in setScopeInfo()

Author: firewave

lib/tokenize.cpp

@@ -2588,7 +2588,8 @@ namespace {
                     }
                     // inline member function
                     else if ((scopeInfo->type == ScopeInfo3::Record || scopeInfo->type == ScopeInfo3::Namespace) && tok1 && Token::Match(tok1->tokAt(-1), "%name% (")) {
-                        std::string scope = scopeInfo->name + "::" + tok1->strAt(-1);
+                        std::string scope;
+                        scope.append(scopeInfo->name).append("::").append(tok1->strAt(-1));
                         scopeInfo = scopeInfo->addChild(ScopeInfo3::MemberFunction, std::move(scope), tok, tok->link());
                         added = true;
                     }