Automatically recycle the terminal server when ctrl/attr.cfg is modified

src/sbbs3/main.cpp

@@ -4942,6 +4942,8 @@ NO_SSH:
 	semfile_list_add(&recycle_semfiles,str);
 	SAFEPRINTF(str,"%stext.dat",scfg.ctrl_dir);
 	semfile_list_add(&recycle_semfiles,str);
+	SAFEPRINTF(str,"%sattr.cfg",scfg.ctrl_dir);
+	semfile_list_add(&recycle_semfiles,str);
 	if(!initialized)
 		semfile_list_check(&initialized,shutdown_semfiles);
 	semfile_list_check(&initialized,recycle_semfiles);