segfault in ntdll!RtlIntegerToUnicodeString ()

[p1plp1]

even with game paused after some hours running: Program received signal SIGSEGV, Segmentation fault. [Switching to Thread 13716.0x2398] 0x77498e19 in ntdll!RtlIntegerToUnicodeString () from C:\Windows\system32\ntdll.dll

backtrace: #0 0x77498e19 in ntdll!RtlIntegerToUnicodeString () from C:\Windows\system32\ntdll.dll #1 0x77498d28 in ntdll!RtlIntegerToUnicodeString () from C:\Windows\system32\ntdll.dll #2 0x7343fd05 in midiOutGetID () from C:\Windows\SysWOW64\winmm.dll #3 0x7343f05b in midiOutUnprepareHeader () from C:\Windows\SysWOW64\winmm.dll #4 0x67a95736 in SDL2_mixer!Mix_EachSoundFont () from c:_visualstudio\freeserf-master\buildgw\src\SDL2_mixer.dll #5 0x011bfce0 in ?? () #6 0x8b909090 in ?? () #7 0xdc8b53ff in ?? () #8 0xe4835151 in ?? () #9 0x04c483f8 in ?? () Cannot access memory at address 0x9090c361