Fix for BUG#26050 "LOAD DATA INFILE breaks ACID"; the ok must be sent

to the client only after the binlog write and engine commit.
No testcase for this bug, as to reproduce it, we need to "kill -9" mysqld,
which we cannot do in the testsuite. But, I tested by hand.


sql/sql_load.cc:
  D in ACID means that once the client got the ok from the server, the data
  is durable on disk. Implies that the ok must be sent after the binlog write
  and after the engine commit, not before.

sql/sql_load.cc

@@ -353,7 +353,6 @@ int mysql_load(THD *thd,sql_exchange *ex,TABLE_LIST *table_list,
   }
   sprintf(name, ER(ER_LOAD_INFO), (ulong) info.records, (ulong) info.deleted,
 	  (ulong) (info.records - info.copied), (ulong) thd->cuted_fields);
-  send_ok(thd,info.copied+info.deleted,0L,name);
   // on the slave thd->query is never initialized
   if (!thd->slave_thread)
     mysql_update_log.write(thd,thd->query,thd->query_length);
@@ -378,6 +377,9 @@ int mysql_load(THD *thd,sql_exchange *ex,TABLE_LIST *table_list,
 #endif /*!EMBEDDED_LIBRARY*/
   if (transactional_table)
     error=ha_autocommit_or_rollback(thd,error); 
+
+  /* ok to client sent only after binlog write and engine commit */
+  send_ok(thd, info.copied + info.deleted, 0L, name);
 err:
   if (thd->lock)
   {