Runtime: Replace bitfield unions with constructor initializers

Runtime/CPakFile.cpp

@@ -8,6 +8,7 @@ CPakFile::CPakFile(std::string_view filename, bool buildDepList, bool worldPak,
     Log.report(logvisor::Fatal, fmt("{}: Unable to open"), GetPath());
   x28_24_buildDepList = buildDepList;
   //x28_24_buildDepList = true; // Always do this so URDE can rapidly pre-warm shaders
+  x28_25_aramFile = false;
   x28_26_worldPak = worldPak;
   x28_27_stashedInARAM = false;
   m_override = override;