fix another link-resolver related crash (non auto url unshort-related)

src/messages/MessageBuilder.cpp

@@ -196,6 +196,11 @@ MessagePtr MessageBuilder::release()
     return ptr;
 }
 
+std::weak_ptr<Message> MessageBuilder::weakOf()
+{
+    return this->message_;
+}
+
 void MessageBuilder::append(std::unique_ptr<MessageElement> element)
 {
     this->message().elements.push_back(std::move(element));

src/messages/MessageBuilder.hpp

@@ -43,6 +43,7 @@ public:
     Message *operator->();
     Message &message();
     MessagePtr release();
+    std::weak_ptr<Message> weakOf();
 
     void append(std::unique_ptr<MessageElement> element);
     QString matchLink(const QString &string);

src/providers/LinkResolver.cpp

@@ -15,6 +15,8 @@ void LinkResolver::getLinkInfo(
     QString requestUrl("https://braize.pajlada.com/chatterino/link_resolver/" +
                        QUrl::toPercentEncoding(url, "", "/:"));
 
+    // Uncomment to test crashes
+    // QTimer::singleShot(3000, [=]() {
     NetworkRequest request(requestUrl);
     request.setCaller(QThread::currentThread());
     request.setTimeout(30000);
@@ -48,6 +50,7 @@ void LinkResolver::getLinkInfo(
     });
 
     request.execute();
+    // });
 }
 
 }  // namespace chatterino

src/providers/twitch/TwitchMessageBuilder.cpp

@@ -544,8 +544,14 @@ void TwitchMessageBuilder::addTextOrEmoji(const QString &string_)
                 ->setLink(link);
 
         LinkResolver::getLinkInfo(
-            linkString, [linkMELowercase, linkMEOriginal, linkString](
-                            QString tooltipText, Link originalLink) {
+            linkString,
+            [weakMessage = this->weakOf(), linkMELowercase, linkMEOriginal,
+             linkString](QString tooltipText, Link originalLink) {
+                auto shared = weakMessage.lock();
+                if (!shared)
+                {
+                    return;
+                }
                 if (!tooltipText.isEmpty())
                 {
                     linkMELowercase->setTooltip(tooltipText);