Prevent edits of unsent messages

src/timeline/TimelineModel.cpp

@@ -1536,6 +1536,9 @@ TimelineModel::formatMemberEvent(QString id)
 void
 TimelineModel::setEdit(QString newEdit)
 {
+        if (edit_.startsWith('m'))
+                return;
+
         if (edit_ != newEdit) {
                 auto ev = events.get(newEdit.toStdString(), "");
                 if (ev && mtx::accessors::sender(*ev) == http::client()->user_id().to_string()) {

src/timeline/TimelineModel.h

@@ -260,6 +260,9 @@ public slots:
         QString reply() const { return reply_; }
         void setReply(QString newReply)
         {
+                if (edit_.startsWith('m'))
+                        return;
+
                 if (reply_ != newReply) {
                         reply_ = newReply;
                         emit replyChanged(reply_);