wininet: Add an exception handler in HttpOpenRequestA to protect against invalid accept type pointers.

crypt32: Fix a failing test on Windows, and remove TODO_ERROR since Wine's implemenation already matches.

EditWordBreakProc documented the third parameter as being the number
of unicode characters in the string for richedit 2.0 and up.  It turns
out that it should actually be the number of bytes in the string.