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[USER32] Fix uninitialized cbTotal

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CORE-18025
This commit is contained in:
Katayama Hirofumi MZ 2022-01-26 08:14:59 +09:00
parent f8faa0b660
commit 1cad26ad08
1 changed files with 14 additions and 15 deletions
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29
win32ss/user/user32/misc/exticon.c
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@ -532,27 +532,26 @@ static UINT ICO_ExtractIconExW(
cbColorTable = (1 << bi.biBitCount) * sizeof(RGBTRIPLE);
}
}
/* biSizeImage is the size of the raw bitmap data.
* https://en.wikipedia.org/wiki/BMP_file_format */
if (bi.biSizeImage == 0)
{
/* Calculate image size */
#define WIDTHBYTES(width, bits) (((width) * (bits) + 31) / 32 * 4)
bi.biSizeImage = WIDTHBYTES(bi.biWidth, bi.biBitCount) * (bi.biHeight / 2);
bi.biSizeImage += WIDTHBYTES(bi.biWidth, 1) * (bi.biHeight / 2);
#undef WIDTHBYTES
}
/* Calculate total size */
cbTotal = bi.biSize + cbColorTable + bi.biSizeImage;
#else
entry = (LPICONIMAGE)(imageData);
#endif
if(sig == 2)
{
#ifdef __REACTOS__
/* biSizeImage is the size of the raw bitmap data.
* A dummy 0 can be given for BI_RGB bitmaps.
* https://en.wikipedia.org/wiki/BMP_file_format */
if (bi.biSizeImage == 0 || bi.biSize == sizeof(BITMAPCOREHEADER))
{
/* Calculate image size */
#define WIDTHBYTES(width, bits) (((width) * (bits) + 31) / 32 * 4)
bi.biSizeImage = WIDTHBYTES(bi.biWidth, bi.biBitCount) * (bi.biHeight / 2);
bi.biSizeImage += WIDTHBYTES(bi.biWidth, 1) * (bi.biHeight / 2);
#undef WIDTHBYTES
}
/* Calculate total size */
cbTotal = bi.biSize + cbColorTable + bi.biSizeImage;
#endif
/* we need to prepend the bitmap data with hot spots for CreateIconFromResourceEx */
#ifdef __REACTOS__
cursorData = HeapAlloc(GetProcessHeap(), 0, 2 * sizeof(WORD) + cbTotal);