reformat source code

according to code styles, 'AccessModifierOffset' should be -2.

src/sql/resolver/ddl/ob_drop_database_resolver.h

@@ -16,7 +16,7 @@
 namespace oceanbase {
 namespace sql {
 class ObDropDatabaseResolver : public ObDDLResolver {
-  public:
+public:
   const static int64_t IF_EXIST = 0;
   const static int64_t DBNAME = 1;
   const static int64_t DB_NODE_COUNT = 2;
@@ -26,11 +26,11 @@ class ObDropDatabaseResolver : public ObDDLResolver {
 
   virtual int resolve(const ParseNode& parse_tree);
 
-  private:
+private:
   // disallow copy
   DISALLOW_COPY_AND_ASSIGN(ObDropDatabaseResolver);
 
-  private:
+private:
   // data members
 };