proxy.c: invoking linphone_core_remove_proxy_config with a proxy not...

proxy.c: invoking linphone_core_remove_proxy_config with a proxy not registered will change registration state to LinphoneRegistrationNone before removal

coreapi/proxy.c

@@ -1151,6 +1151,8 @@ void linphone_core_remove_proxy_config(LinphoneCore *lc, LinphoneProxyConfig *cf
 		linphone_proxy_config_enable_register(cfg,FALSE);
 		linphone_proxy_config_done(cfg);
 		linphone_proxy_config_update(cfg);
+	} else if (cfg->state != LinphoneRegistrationNone) {
+		linphone_proxy_config_set_state(cfg, LinphoneRegistrationNone,"Registration disabled");
 	}
 	linphone_proxy_config_write_all_to_config_file(lc);
 }