Bug #23427: incompatible ABI change in 5.0.26?

Revert 1 June change enough to restore ABI compatibility with previous
versions.

include/mysql.h

@@ -293,12 +293,6 @@ typedef struct st_mysql
   /* needed for embedded server - no net buffer to store the 'info' */
   char *info_buffer;
 #endif
-  /*
-    In embedded server it points to the statement that is processed
-    in the current query. We store some results directly in statement
-    fields then.
-  */
-  struct st_mysql_stmt *current_stmt;
 } MYSQL;
 
 typedef struct st_mysql_res {

libmysqld/lib_sql.cc

@@ -100,7 +100,6 @@ emb_advanced_command(MYSQL *mysql, enum enum_server_command command,
   mysql->affected_rows= ~(my_ulonglong) 0;
   mysql->field_count= 0;
   net->last_errno= 0;
-  mysql->current_stmt= stmt;
 
   thd->store_globals();				// Fix if more than one connect
   /*