use size_t in loop variable

alib2abstraction/src/registry/AlgorithmRegistry.cpp

@@ -106,7 +106,7 @@ std::shared_ptr < abstraction::OperationAbstraction > AlgorithmRegistry::getAbst
 			continue;
 		ext::vector < MatchType > compatibilityVector;
-		for ( unsigned i = 0; i < paramTypes.size ( ); ++ i ) {
+		for ( size_t i = 0; i < paramTypes.size ( ); ++ i ) {
 			MatchType matchType;
 			if ( std::get < 0 > ( entry->getEntryInfo ( ).getParams ( ) [ i ] ) == paramTypes [ i ] ) {
 				matchType = MatchType::EXACT;
@@ -126,7 +126,7 @@ std::shared_ptr < abstraction::OperationAbstraction > AlgorithmRegistry::getAbst
 	// remaining compatible overloads are examined per parameter and the best option is remembered as overload index that achieved it
 	ext::vector < ext::set < unsigned > > winnerList;
-	for ( unsigned i = 0; i < paramTypes.size ( ); ++ i ) {
+	for ( size_t i = 0; i < paramTypes.size ( ); ++ i ) {
 		ext::set < unsigned > best;
 		unsigned overload = 0;