Update mailimap_types.h

src/low-level/imap/mailimap_types.h

@@ -3385,6 +3385,8 @@ struct mailimap {
   
   void (* imap_logger)(mailimap * session, int log_type, const char * str, size_t size, void * context);
   void * imap_logger_context;
+  
+  int complex_command_tag_enabled;
 };