msadpcm32.acm: Stop converting data instead of crashing

[Bruno Jesus]

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

Tomb Raider 3 uses a single archive with all wav files inside, when
playing some specific sounds it passes incorrect lengths of data that
reach the next wav file header. This causes an assert in the code that
is now gracefully handled.

Fixes bug https://bugs.winehq.org/show_bug.cgi?id=21000
-------------- next part --------------
diff --git a/dlls/msadp32.acm/msadp32.c b/dlls/msadp32.acm/msadp32.c
index 2c61575..0924163 100644
--- a/dlls/msadp32.acm/msadp32.c
+++ b/dlls/msadp32.acm/msadp32.c
@@ -249,9 +249,17 @@ static	void cvtSSms16K(const ACMDRVSTREAMINSTANCE *adsi,
     {
         const unsigned char*    in_src = src;
 
-        assert(*src <= 6);
+        /* Catch a problem from Tomb Raider III (bug 21000) where it passes
+         * invalid data after a valid sequence of blocks */
+        if (*src > 6 || *(src + 1) > 6)
+        {
+            /* Recalculate the amount of used output buffer. We are not changing
+             * nsrc, let's assume the bad data was parsed */
+            *ndst -= nblock * nsamp_blk * adsi->pwfxDst->nBlockAlign;
+            ERR("Invalid ADPCM data, stopping conversion\n");
+            break;
+        }
         coeffL = MSADPCM_CoeffSet[*src++];
-        assert(*src <= 6);
         coeffR = MSADPCM_CoeffSet[*src++];
 
         ideltaL  = R16(src);    src += 2;