[Bug 49285] PNotesPortable crashes inside WritePrivateProfileStructW

[WineHQ Bugzilla]

https://bugs.winehq.org/show_bug.cgi?id=49285

Louis Lenders  changed:

What    |Removed                     |Added
----------------------------------------------------------------------------
            Summary|PNotesPortable crashes      |PNotesPortable crashes
                   |inside kernel32             |inside
                   |                            |WritePrivateProfileStructW

--- Comment #1 from Louis Lenders  ---
revisit old bug by me. Still present,

0108:Call KERNEL32.WritePrivateProfileStructW(00494d5c L"hotkeys",0032c694
L"10001",00000000,00000040,004f0310
 L"Z:\home\louis\d\PNotesPortable\Data\settings\Notes.ini") ret=0043456f

buf pointer is NULL, so crashes in following code (profile.c):

if (!section && !key && !buf)  /* flush the cache */
        return WritePrivateProfileStringW( NULL, NULL, NULL, filename );

/* allocate string buffer for hex chars + checksum hex char + '\0' */
    outstring = HeapAlloc( GetProcessHeap(), 0, (bufsize*2 + 2 + 1) *
sizeof(WCHAR) );
    p = outstring;
    for (binbuf = (LPBYTE)buf; binbuf < (LPBYTE)buf+bufsize; binbuf++) {
      *p++ = hex[*binbuf >> 4];
      *p++ = hex[*binbuf & 0xf];

Hacking "!key && !buf" into !key || !buf" gets rid of the crash

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