fix saving peer window pos

Signed-off-by: dignow <linlong1265@gmail.com>

src/ui_interface.rs

@@ -215,6 +215,18 @@ pub fn get_peer_flutter_config(id: String, name: String) -> String {
     c.ui_flutter.get(&name).unwrap_or(&"".to_owned()).to_owned()
 }
 
+#[inline]
+#[cfg(feature = "flutter")]
+pub fn set_peer_flutter_config(id: String, name: String, value: String) {
+    let mut c = PeerConfig::load(&id);
+    if value.is_empty() {
+        c.ui_flutter.remove(&name);
+    } else {
+        c.ui_flutter.insert(name, value);
+    }
+    c.store(&id);
+}
+
 #[inline]
 pub fn set_peer_option(id: String, name: String, value: String) {
     let mut c = PeerConfig::load(&id);