[PATCH v2 0/2] MR10933: kernelbase: Add null check for str in OutputDebugStringW

[Matthias Gorzellik (＠gotzl)]

The following code crashes wine but seems to be OK in Windows:
```
#include <windows.h>
int main() {
    OutputDebugStringW(NULL);
    return 0;
}
```
The MR aligns behavior of `OutputDebugStringW` to Windows by adding a null check and bailing out of `OutputDebugStringW`.

--
  v2: kernel32/tests: Add null pointer test for OutputDebugStringW
 
https://gitlab.winehq.org/wine/wine/-/merge_requests/10933