algo: fix semantics of return in V4 and V10

alib2algo/src/regexp/simplify/RegExpOptimizeFormalPart.hpp

@@ -450,11 +450,12 @@ bool RegExpOptimize::V4( FormalRegExpElement < SymbolType > * & node ) {
 		if( FormalRegExpIteration < SymbolType > * leftIte = dynamic_cast < FormalRegExpIteration < SymbolType > * > ( & child->getLeft ( ) ); leftIte ) {
 			if( FormalRegExpIteration < SymbolType > * rightIte = dynamic_cast < FormalRegExpIteration < SymbolType > * > ( & child->getRight ( ) ); rightIte ) {
 				n->setChild ( FormalRegExpAlternation < SymbolType >( std::move ( leftIte->getElement ( ) ), std::move ( rightIte->getElement ( ) ) ) );
+				return true;
 			}
 		}
 	}
-	return true;
+	return false;
 }
 /**
@@ -512,11 +513,12 @@ bool RegExpOptimize::V10( FormalRegExpElement < SymbolType > * & node ) {
 			if( FormalRegExpIteration < SymbolType > * rightIte = dynamic_cast < FormalRegExpIteration < SymbolType > * > ( & alt->getRight ( ) ); rightIte ) {
 				alt->setLeft ( std::move ( leftIte->getChild ( ) ) );
 				alt->setRight ( std::move ( rightIte->getChild ( ) ) );
+				return true;
 			}
 		}
 	}
-	return true;
+	return false;
 }
 /**