Refactorizations:

- Removed empty implementation of CheckUninitVar::runChecks()
- Avoided unnecessary string copying

lib/checkuninitvar.h

@@ -47,13 +47,6 @@ class CPPCHECKLIB CheckUninitVar : public Check {
         : Check(myName(), tokenizer, settings, errorLogger)
     { }
 
-    /** @brief Run checks against the normal token list */
-    void runChecks(const Tokenizer *tokenizer, const Settings *settings, ErrorLogger *errorLogger) {
-        (void)tokenizer;
-        (void)settings;
-        (void)errorLogger;
-    }
-
     /** @brief Run checks against the simplified token list */
     void runSimplifiedChecks(const Tokenizer *tokenizer, const Settings *settings, ErrorLogger *errorLogger) {
         CheckUninitVar checkUninitVar(tokenizer, settings, errorLogger);

lib/checkunusedvar.cpp

@@ -757,8 +757,9 @@ void CheckUnusedVar::checkFunctionVariableUsage_iterateScopes(const Scope* const
         // bailout when for_each is used
         if (Token::Match(tok,"%var% (") && Token::simpleMatch(tok->linkAt(1),") {")) {
             // does the name contain "for_each" or "foreach"?
-            std::string nameTok(tok->str());
-            std::transform(nameTok.begin(),nameTok.end(),nameTok.begin(),::tolower);
+            std::string nameTok;
+            nameTok.resize(tok->str().size());
+            std::transform(tok->str().begin(), tok->str().end(), nameTok.begin(), ::tolower);
             if (nameTok.find("foreach") != std::string::npos || nameTok.find("for_each") != std::string::npos) {
                 // bailout all variables in the body that are used more than once.
                 // TODO: there is no need to bailout if variable is only read or only written