fix conversions of unique_ptrs

alib2algo/src/regexp/transform/RegExpDerivation.cpp

@@ -91,7 +91,7 @@ std::unique_ptr < regexp::UnboundedRegExpElement < alphabet::Symbol > > RegExpDe
 	for(const auto& child : alternation.getElements())
 		ret->appendElement( * ( child->accept<std::unique_ptr < regexp::UnboundedRegExpElement < alphabet::Symbol > >, regexp::RegExpDerivation::Unbounded > ( argument ) ) );
-	return ret;
+	return std::unique_ptr < regexp::UnboundedRegExpElement < alphabet::Symbol > > ( std::move ( ret ) );
 }
 std::unique_ptr < regexp::UnboundedRegExpElement < alphabet::Symbol > > RegExpDerivation::Unbounded::visit(const regexp::UnboundedRegExpConcatenation < alphabet::Symbol > & concatenation, const alphabet::Symbol& argument) {
@@ -111,14 +111,14 @@ std::unique_ptr < regexp::UnboundedRegExpElement < alphabet::Symbol > > RegExpDe
 			break;
 	}
-	return ret;
+	return std::unique_ptr < regexp::UnboundedRegExpElement < alphabet::Symbol > > ( std::move ( ret ) );
 }
 std::unique_ptr < regexp::UnboundedRegExpElement < alphabet::Symbol > > RegExpDerivation::Unbounded::visit(const regexp::UnboundedRegExpIteration < alphabet::Symbol > & iteration, const alphabet::Symbol& argument) {
-	UnboundedRegExpConcatenation < alphabet::Symbol > * con = new regexp::UnboundedRegExpConcatenation < alphabet::Symbol > ( );
+	std::unique_ptr < UnboundedRegExpConcatenation < alphabet::Symbol > > con ( new regexp::UnboundedRegExpConcatenation < alphabet::Symbol > ( ) );
 	con->appendElement ( * ( iteration.getElement().accept<std::unique_ptr < regexp::UnboundedRegExpElement < alphabet::Symbol > >, regexp::RegExpDerivation::Unbounded > ( argument ) ) );
 	con->appendElement ( iteration );
-	return std::unique_ptr < UnboundedRegExpElement < alphabet::Symbol > > ( con );
+	return std::unique_ptr < UnboundedRegExpElement < alphabet::Symbol > > ( std::move ( con ) );
 }
 std::unique_ptr < regexp::UnboundedRegExpElement < alphabet::Symbol > > RegExpDerivation::Unbounded::visit(const regexp::UnboundedRegExpSymbol < alphabet::Symbol > & symbol, const alphabet::Symbol& argument) {