* small improvement to last commit: actually pass the error value from WM_write_file back to the operator and cancel the operator if not successful. This also preserves the indication that the file hasn't been saved in case of error.
* small improvement to last commit: actually pass the error value from WM_write_file back to the operator and cancel the operator if not successful. This also preserves the indication that the file hasn't been saved in case of error.