[Bug 29127] Typing of the Dead demo crashes on launch

http://bugs.winehq.org/show_bug.cgi?id=29127

--- Comment #4 from Andrew Eikum  2011-12-02 14:14:44 CST ---
Created attachment 37749
  --> http://bugs.winehq.org/attachment.cgi?id=37749
dsound: Validate format in primary buffer's SetFormat()

It is a divide by zero, but it's due to invalid input from the user. TOD asks
the primary buffer to set its format to have 2 bits per sample. Not so
surprisingly, that causes problems, eventually culminating in the divide by
zero.

We should validate the input to SetFormat. This patch fixes it, and it's away
to wine-patches now.