Fixed warnings as mentioned in

https://dev.vatsim-germany.org/boards/22/topics/2587?r=2598#message-2598
and found by
+win32-msvc*:QMAKE_CXXFLAGS_WARN_ON *= /Wall /W3 /wd4640 /wd4619 /wd4350 /wd4351

src/blackgui/components/settingsfsxcomponent.cpp

@@ -69,7 +69,7 @@ namespace BlackGui
                 CLogMessage(this).warning("invalid port");
                 return;
             }
-            quint16 p = port.toUInt();
+            int p = port.toInt();
             QString msg;
             if (!CNetworkUtils::canConnect(address, p, msg))
             {
@@ -108,7 +108,7 @@ namespace BlackGui
                 CLogMessage(this).warning("invalid port");
                 return;
             }
-            quint16 p = port.toUInt();
+            int p = port.toInt();
             QString fileName = this->getIContextSimulator()->getSimulatorInfo().getSimulatorSetupValueAsString(CFsxSimulatorSetup::SetupSimConnectCfgFile);
             Q_ASSERT(!fileName.isEmpty());
             // write either local or remote file

src/blackgui/components/textmessagecomponent.cpp

@@ -421,7 +421,6 @@ namespace BlackGui
                 cmd.append(" ").append(enteredLine);
                 return cmd;
             }
-            return "";
         }
 
         void CTextMessageComponent::onTextMessageReceived(const CTextMessageList &messages)