Remove an invalid out-of-bounds array access that attempted to handle
ERROR_INSUFFICIENT_BUFFER. The statement did not resize the fixed-size
buffer and had no effect other than invoking undefined behavior.
The function only uses QueryDosDeviceA() as an existence check for COM
ports, so removing the dead error-handling code does not change its
behavior.
Signed-off-by: Robin Getz <rgetz503@gmail.com>