[PATCH v3 0/2] MR8041: kernelbase: Fixed stack overflow of DefineDosDeviceW()

[Wei Xie (＠wayne)]

1. Changed fixed-size buffer to dynamic allocation for link_name to
prevent buffer overflow
2. Added proper memory cleanup with HeapFree in all error paths
3. Fixed potential null pointer dereference when device is NULL
4. Improved error handling by checking memory allocation success

The original code used a fixed-size buffer (15 chars) which could
overflow with long device names. The new version dynamically allocates
memory based on actual device name length, includes proper cleanup, and 
handles edge cases better.

Signed-off-by: Wei Xie <xiewei(a)uniontech.com>

--
  v3: kernel32/tests: add missing DefineDosDeviceW test cases
 
https://gitlab.winehq.org/wine/wine/-/merge_requests/8041