Added default case for switch case, by moving the return statement into the default section

Author: antogaro

src/main/java/org/apache/commons/cli/PatternOptionBuilder.java

@@ -129,9 +129,9 @@ public static Object getValueClass(final char ch) {
             return PatternOptionBuilder.FILES_VALUE;
         case '/':
             return PatternOptionBuilder.URL_VALUE;
+        default:
+            return null;
         }
-
-        return null;
     }
 
     /**