Fix dumb regression, initialize "std::filesystem::file_time_type" with "clock::now()".

apps/openmw/mwstate/character.cpp

@@ -79,7 +79,7 @@ void MWState::Character::addSlot(const ESM::SavedGame& profile)
     }
 
     slot.mProfile = profile;
-    slot.mTimeStamp = std::filesystem::file_time_type();
+    slot.mTimeStamp = std::filesystem::file_time_type::clock::now();
 
     mSlots.push_back(slot);
 }
@@ -157,7 +157,7 @@ const MWState::Slot* MWState::Character::updateSlot(const Slot* slot, const ESM:
 
     Slot newSlot = *slot;
     newSlot.mProfile = profile;
-    newSlot.mTimeStamp = std::filesystem::file_time_type();
+    newSlot.mTimeStamp = std::filesystem::file_time_type::clock::now();
 
     mSlots.erase(mSlots.begin() + index);
 

components/fx/technique.cpp

@@ -44,7 +44,7 @@ namespace fx
         : mName(std::move(name))
         , mFileName(Files::pathToUnicodeString(
               (Files::pathFromUnicodeString(Technique::sSubdir) / (mName + Technique::sExt))))
-        , mLastModificationTime(std::filesystem::file_time_type())
+        , mLastModificationTime(std::filesystem::file_time_type::clock::now())
         , mWidth(width)
         , mHeight(height)
         , mVFS(vfs)

components/misc/timeconvert.hpp

@@ -5,12 +5,16 @@
 
 namespace Misc
 {
-    template <typename TP>
-    inline std::time_t toTimeT(TP tp)
+    inline std::time_t toTimeT(std::filesystem::file_time_type tp)
     {
         using namespace std::chrono;
-        auto sctp = time_point_cast<system_clock::duration>(tp - TP::clock::now() + system_clock::now());
-        return system_clock::to_time_t(sctp);
+#if __cpp_lib_chrono >= 201907
+        const auto systemTime = clock_cast<system_clock>(tp);
+#else
+        auto systemTime = time_point_cast<system_clock::duration>(
+            tp - std::filesystem::file_time_type::clock::now() + system_clock::now());
+#endif
+        return system_clock::to_time_t(systemTime);
     }
 
     inline std::string timeTToString(const std::time_t tp, const char* fmt)