Don't allow saving if crashed during loading

src/app/signal_handlers.cpp

@@ -63,7 +63,8 @@ void CSignalHandlers::SignalHandler(int sig)
 #include <cstdlib>
 #include <memory>
 #include <cxxabi.h>
-std::string demangle(const char* name) {
+std::string demangle(const char* name)
+{
     int status;
     std::unique_ptr<char[], void(*)(void*)> result {
         abi::__cxa_demangle(name, nullptr, nullptr, &status),
@@ -150,7 +151,7 @@ void CSignalHandlers::ReportError(const std::string& errorMessage)
         robotMain = CRobotMain::GetInstancePointer();
         msg << "The game was in phase " << PhaseToString(robotMain->GetPhase()) << " (ID=" << robotMain->GetPhase() << ")" << std::endl;
         msg << "Last started level was: category=" << GetLevelCategoryDir(robotMain->GetLevelCategory()) << " chap=" << robotMain->GetLevelChap() << " rank=" << robotMain->GetLevelRank() << std::endl;
-        canSave = (robotMain->GetPhase() == PHASE_SIMUL);
+        canSave = (robotMain->GetPhase() == PHASE_SIMUL) && !robotMain->IsLoading();
     }
     msg << "==============================" << std::endl;
     msg << std::endl;

src/level/robotmain.cpp

@@ -5541,6 +5541,11 @@ const std::vector<std::string>& CRobotMain::GetCustomLevelList()
     return m_ui->GetCustomLevelList();
 }
 
+bool CRobotMain::IsLoading()
+{
+    return m_ui->GetLoadingScreen()->IsVisible();
+}
+
 void CRobotMain::StartMissionTimer()
 {
     if (m_missionTimerEnabled && !m_missionTimerStarted)

src/level/robotmain.h

@@ -302,6 +302,9 @@ public:
     std::string GetCustomLevelName(int id);
     const std::vector<std::string>& GetCustomLevelList();
 
+    //! Returns true if the game is on the loading screen
+    bool        IsLoading();
+
     void        StartMissionTimer();
 
     void        SetAutosave(bool enable);