Fix warnings and deprecated functions

- For QCheckBox: stateChanged -> checkStateChanged

- QChar(PREANIM) -> QLatin1Char(PREANIM)

- Unused result on demo_file.open()

- QPointer include was missing from lobby.h

- Missing const and override qualifiers

1 files changed, 1 insertions, 2 deletions

diff --git a/src/demoserver.cpp b/src/demoserver.cpp
index dace861..f087dbd 100644
--- a/src/demoserver.cpp
+++ b/src/demoserver.cpp
@@ -296,8 +296,7 @@ void DemoServer::handle_packet(AOPacket p_packet)
 void DemoServer::load_demo(QString filename)
 {
   QFile demo_file(filename);
-  demo_file.open(QIODevice::ReadOnly);
-  if (!demo_file.isOpen())
+  if (!demo_file.open(QIODevice::ReadOnly))
   {
     return;
   }