simplify exceptions creation in castApi

alib2common/src/cast/CastApi.hpp

@@ -34,9 +34,7 @@ struct castApi {
 			std::map < std::type_index, std::function < alib::Object ( const alib::ObjectBase & ) > >::iterator res = castFunctions.find ( std::type_index ( typeid ( from ) ) );
 			if ( res == castFunctions.end ( ) ) {
-				char* name = std::type_name(typeid(from));
-				std::string fromType(name);
-				std::free(name);
+				std::string fromType = std::cstringToString(std::type_name(typeid(from)));
 				throw exception::CommonException ( "Bad cast: From: " + fromType + " To: " + toType());
 			}
@@ -72,9 +70,7 @@ struct castApi {
 		}
 		std::string toType ( ) {
-			char* name = std::type_name<To>();
-			std::string toType(name);
-			std::free(name);
+			std::string toType = std::cstringToString(std::type_name<To>());
 			return toType;
 		}
@@ -131,9 +127,7 @@ public:
 		std::map < std::type_index, CastPoolBase * >::iterator res = castFunctionsById ( ).find ( typeId );
 		if ( res == castFunctionsById ( ).end ( ) ) {
-			char* name = std::type_name( typeId );
-			std::string toType(name);
-			std::free(name);
+			std::string toType = std::cstringToString(std::type_name( typeId ));
 			throw exception::CommonException ( "Casting to type " + toType + " not available." );
 		} else