fix memory leak when constructor throws

alib2data/src/regexp/formal/FormalRegExp.cpp

@@ -111,8 +111,10 @@ void FormalRegExp::setRegExp(const FormalRegExpElement& regExp) {
 void FormalRegExp::setRegExp(FormalRegExpElement&& regExp) {
 	delete this->regExp;
 	this->regExp = std::move(regExp).plunder();
-	if(!this->regExp->attachRegExp(this))
+	if(!this->regExp->attachRegExp(this)) {
+		delete this->regExp;
 		throw exception::AlibException("Input symbols not in the alphabet.");
+	}
 }
 bool FormalRegExp::removeSymbolFromAlphabet(const alphabet::Symbol & symbol) {

alib2data/src/regexp/unbounded/UnboundedRegExp.cpp

@@ -111,8 +111,10 @@ void UnboundedRegExp::setRegExp(const UnboundedRegExpElement& regExp) {
 void UnboundedRegExp::setRegExp(UnboundedRegExpElement&& regExp) {
 	delete this->regExp;
 	this->regExp = std::move(regExp).plunder();
-	if(!this->regExp->attachRegExp(this))
+	if(!this->regExp->attachRegExp(this)) {
+		delete this->regExp;
 		throw exception::AlibException("Input symbols not in the alphabet.");
+	}
 }
 bool UnboundedRegExp::removeSymbolFromAlphabet(const alphabet::Symbol & symbol) {