Fix Scanner bug that would trigger a return keypress

src/main/java/de/umarumg/Main.java

@@ -105,7 +105,7 @@ public class Main {
                 while (choice == 0) {
                     System.out.print("> ");
                     if (scanner.hasNextInt()) {
-                        choice = scanner.nextInt();
+                        choice = Integer.parseInt(scanner.nextLine());
                         if (choice < 0 || choice > decisions.size()) {
                             choice = 0;
                         }