refactor: Comply with Wmaybe-uninitialized

src/core/core.cpp

@@ -926,7 +926,7 @@ void Core::onUserStatusChanged(Tox*, uint32_t friendId, Tox_User_Status userstat
 void Core::onConnectionStatusChanged(Tox*, uint32_t friendId, Tox_Connection status, void* vCore)
 {
     Core* core = static_cast<Core*>(vCore);
-    Status::Status friendStatus;
+    Status::Status friendStatus = Status::Status::Offline;
     switch (status)
     {
         case TOX_CONNECTION_NONE:

src/platform/camera/directshow.cpp

@@ -140,7 +140,7 @@ static IBaseFilter* getDevFilter(QString devName)
         LPMALLOC coMalloc = nullptr;
         IBindCtx* bindCtx = nullptr;
         LPOLESTR olestr = nullptr;
-        char* devIdString;
+        char* devIdString = nullptr;
 
         if (CoGetMalloc(1, &coMalloc) != S_OK)
             goto fail;