refactor: Comply with Wmissing-field-initializers

Add explicit missing initializers.

src/model/chathistory.cpp

@@ -382,7 +382,7 @@ void ChatHistory::loadHistoryIntoSessionChatLog(ChatLogIdx start) const
             // we hit IMessageDispatcher's signals which history listens for.
             // Items added to history have already been sent so we know they already
             // reflect what was sent/received.
-            auto processedMessage = Message{isAction, messageContent, message.timestamp};
+            auto processedMessage = Message{isAction, messageContent, message.timestamp, {}, {}};
 
             auto dispatchedMessageIt =
                 std::find_if(dispatchedMessageRowIdMap.begin(), dispatchedMessageRowIdMap.end(),

test/persistence/offlinemsgengine_test.cpp

@@ -43,7 +43,7 @@ void TestOfflineMsgEngine::testReceiptBeforeMessage()
 {
     OfflineMsgEngine offlineMsgEngine;
 
-    Message msg{false, QString(), QDateTime()};
+    Message msg{false, QString(), QDateTime(), {}, {}};
 
     auto const receipt = ReceiptNum(0);
     offlineMsgEngine.onReceiptReceived(receipt);
@@ -140,7 +140,7 @@ void TestOfflineMsgEngine::testCallback()
 
     size_t numCallbacks = 0;
     auto callback = [&numCallbacks] (bool) { numCallbacks++; };
-    Message msg{false, QString(), QDateTime()};
+    Message msg{false, QString(), QDateTime(), {}, {}};
     ReceiptNum receipt;
 
     offlineMsgEngine.addSentCoreMessage(ReceiptNum(1), Message(), callback);