[1/2] msvfw32: Derive frame dimension from bitmap info when not available

[Bruno Jesus]

Signed-off-by: Bruno Jesus <00cpxxx at gmail.com>

Otherwise -1,-1 will be passed to StrechBlt.

Fixes bug https://bugs.winehq.org/show_bug.cgi?id=9032 and also
CamStudio Player.
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---
 dlls/msvfw32/drawdib.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/dlls/msvfw32/drawdib.c b/dlls/msvfw32/drawdib.c
index a6af90f..e96b0f2 100644
--- a/dlls/msvfw32/drawdib.c
+++ b/dlls/msvfw32/drawdib.c
@@ -347,7 +347,14 @@ BOOL VFWAPI DrawDibDraw(HDRAWDIB hdd, HDC hdc,
 
 #undef CHANGED
 
-    if ((dxDst == -1) && (dyDst == -1)) 
+    /* If source dimensions are not specified derive them from bitmap header */
+    if (dxSrc == -1 && dySrc == -1)
+    {
+        dxSrc = lpbi->biWidth;
+        dySrc = lpbi->biHeight;
+    }
+    /* If destination dimensions are not specified derive them from source */
+    if (dxDst == -1 && dyDst == -1)
     {
         dxDst = dxSrc;
         dyDst = dySrc;
-- 
2.1.4