[Bug 48788] New: null pointer in wined3d_palette_set_entries with Diablo GOG

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=48788

            Bug ID: 48788
           Summary: null pointer in wined3d_palette_set_entries with
                    Diablo GOG
           Product: Wine
           Version: 5.4
          Hardware: x86-64
                OS: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: directx-d3d
          Assignee: wine-bugs at winehq.org
          Reporter: perchrh-wine at pvv.org
      Distribution: ---

Created attachment 66691
  --> https://bugs.winehq.org/attachment.cgi?id=66691
WINEDEBUG=+d3d wine Diablo.exe

The game "Diablo", appdb-link: [1] crashes on startup due to a wine_d3d error. 

Steps to reproduce: 
1 Set the wine configuration to Windows 10, virtual desktop 800x600, to make
the installer work.
2 Run the GOG Diablo installer, 
'wine setup_diablo_1.09_hellfire_v2_(30038).exe'
3 Then in the game directory, run 'wine Diablo.exe', to launch the game. 

After launching the game, the Blizzard logo successfully shows on screen.
Immediately after the logo animation, wine crashes. 

The crash looks like a null pointer, excerpt below: 
Backtrace:
=>0 0x7c52d82e wined3d_palette_set_entries+0x3e() in wined3d (0x0032fc38)
0x7c52d82e wined3d_palette_set_entries+0x3e in wined3d: movl    0x0(%eax),%ecx

The attached log with WINEDEBUG=+d3d show wined3d_palette_set_entries is first
successfully called multiple times before the null pointer crash. The logs are
from a clean wine prefix. The crash is reproducible 100% of the time. I had to
run wineserver -k after the crash to launch the game again. 

This crash differs from the other startup bug registered for the same game [2],
which crashes in storm.dll as opposed to wine_d3d. 

[1]
https://appdb.winehq.org/objectManager.php?sClass=version&iId=37759 
[2]
https://bugs.winehq.org/show_bug.cgi?id=46803

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