[PATCH v3 resend] msacm32: Don't write cbSize if the format is WAVE_FORMAT_PCM.

[Zebediah Figura]

v3: also correctly set cbSize
WAVE_FORMAT_PCM uses PCMWAVEFORMAT, which lacks the cbSize member.

Fixes https://bugs.winehq.org/show_bug.cgi?id=26388

Signed-off-by: Zebediah Figura <z.figura12 at gmail.com>
---
 dlls/msacm32/format.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/dlls/msacm32/format.c b/dlls/msacm32/format.c
index de07cba9a3..3f3ee5492d 100644
--- a/dlls/msacm32/format.c
+++ b/dlls/msacm32/format.c
@@ -78,7 +78,8 @@ static BOOL CALLBACK MSACM_FillFormatTagsCB(HACMDRIVERID hadid,
 		afd.pwfx = HeapAlloc(MSACM_hHeap, 0, paftd->cbFormatSize);
 		if (!afd.pwfx) return FALSE;
 		afd.pwfx->wFormatTag = paftd->dwFormatTag;
-		afd.pwfx->cbSize = paftd->cbFormatSize;
+		if (paftd->dwFormatTag != WAVE_FORMAT_PCM)
+		    afd.pwfx->cbSize = paftd->cbFormatSize - sizeof(WAVEFORMATEX);
 		afd.cbwfx = paftd->cbFormatSize;
 
 		for (i = 0; i < paftd->cStandardFormats; i++) {
-- 
2.13.0