Fixed matrix index if fixForLoopAccess should be fixed but was not because for...

Fixed matrix index if fixForLoopAccess should be fixed but was not because for some reasons fix function can not be called

src/main/java/de/monticore/lang/monticar/generator/cpp/converter/ExecuteMethodGeneratorMatrixExpressionHandler.java

@@ -272,7 +272,7 @@ public class ExecuteMethodGeneratorMatrixExpressionHandler {
                 && symbol.isMathMatrixAccessOperatorSymbolPresent()
                 && (!symbol.getNameToAccess().isEmpty())
                 && (!MathCommandRegisterCPP.containsCommandExpression(symbol, symbol.getNameToAccess() + input))
-                && (!MathFunctionFixer.fixForLoopAccess(symbol.getMathMatrixAccessOperatorSymbol().getMathMatrixNameExpressionSymbol(), ComponentConverter.currentBluePrint))
+                && ((!MathFunctionFixer.fixForLoopAccess(symbol.getMathMatrixAccessOperatorSymbol().getMathMatrixNameExpressionSymbol(), ComponentConverter.currentBluePrint)) || (!input.contains("-1")))
                 && (!StringValueListExtractorUtil.containsPortName(symbol.getNameToAccess()));
     }
 }