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fix kernel32 comm crash

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If lpOverlapped is NULL, lpBytesReturned cannot be NULL.

svn path=/trunk/; revision=38891
This commit is contained in:
Christoph von Wittich 2009-01-18 13:56:09 +00:00
parent fc86a01ed2
commit 7090d5e238
1 changed files with 4 additions and 4 deletions
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8
reactos/dll/win32/kernel32/misc/comm.c
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@ -354,13 +354,13 @@ GetCommState(HANDLE hFile, LPDCB lpDCB)
}
if (!DeviceIoControl(hFile, IOCTL_SERIAL_GET_BAUD_RATE,
NULL, 0, &BaudRate, sizeof(BaudRate), NULL, NULL) ||
NULL, 0, &BaudRate, sizeof(BaudRate), &dwBytesReturned, NULL) ||
!DeviceIoControl(hFile, IOCTL_SERIAL_GET_LINE_CONTROL,
NULL, 0, &LineControl, sizeof(LineControl), NULL, NULL) ||
NULL, 0, &LineControl, sizeof(LineControl), &dwBytesReturned, NULL) ||
!DeviceIoControl(hFile, IOCTL_SERIAL_GET_HANDFLOW,
NULL, 0, &HandFlow, sizeof(HandFlow), NULL, NULL) ||
NULL, 0, &HandFlow, sizeof(HandFlow), &dwBytesReturned, NULL) ||
!DeviceIoControl(hFile, IOCTL_SERIAL_GET_CHARS,
NULL, 0, &SpecialChars, sizeof(SpecialChars), NULL, NULL))
NULL, 0, &SpecialChars, sizeof(SpecialChars), &dwBytesReturned, NULL))
return FALSE;
memset(lpDCB, 0, sizeof(*lpDCB));