!82 我通过IDEA代码检查 优化返回语法

Merge pull request !82 from XiaoBingBy/master

mybatis-plus-generator/src/main/java/com/baomidou/mybatisplus/generator/config/converts/DmTypeConvert.java

@@ -31,8 +31,7 @@ public class DmTypeConvert implements ITypeConvert {
     @Override
     public IColumnType processTypeConvert(GlobalConfig globalConfig, String fieldType) {
         String t = fieldType.toLowerCase();
-        DbColumnType dbColumnType = new BasicDataTypeHandler().getDbColumnType(t);
-        return dbColumnType;
+        return new BasicDataTypeHandler().getDbColumnType(t);
     }
 
      interface Handler {