Update MapperMethod.java

It seems a little bad..

Author: tjgykhulj

src/main/java/org/apache/ibatis/binding/MapperMethod.java

@@ -50,18 +50,18 @@ public MapperMethod(Class<?> mapperInterface, Method method, Configuration confi
   }
 
   public Object execute(SqlSession sqlSession, Object[] args) {
-    Object result;
+    Object result, param;
     switch (command.getType()) {
       case INSERT:
-        Object param = method.convertArgsToSqlCommandParam(args);
+        param = method.convertArgsToSqlCommandParam(args);
         result = rowCountResult(sqlSession.insert(command.getName(), param));
         break;
       case UPDATE:
-        Object param = method.convertArgsToSqlCommandParam(args);
+        param = method.convertArgsToSqlCommandParam(args);
         result = rowCountResult(sqlSession.update(command.getName(), param));
         break;
       case DELETE:
-        Object param = method.convertArgsToSqlCommandParam(args);
+        param = method.convertArgsToSqlCommandParam(args);
         result = rowCountResult(sqlSession.delete(command.getName(), param));
         break;
       case SELECT:
@@ -75,7 +75,7 @@ public Object execute(SqlSession sqlSession, Object[] args) {
         } else if (method.returnsCursor()) {
           result = executeForCursor(sqlSession, args);
         } else {
-          Object param = method.convertArgsToSqlCommandParam(args);
+          param = method.convertArgsToSqlCommandParam(args);
           result = sqlSession.selectOne(command.getName(), param);
         }
         break;