tools: Fix build error in seq2bseq
tools: Fix build error in seq2bseq

Don't ignore return value of write. This fix following build error on
Ubuntu:

tools/seq2bseq.c: In function ‘convert_line’:
tools/seq2bseq.c:52:8: error: ignoring return value of ‘write’,
     declared with attribute warn_unused_result [-Werror=unused-result]
   write(fd, &val, 1);

ComputeCycles/bluez,mapfau/bluez,mapfau/bluez,mapfau/bluez,pstglia/external-bluetooth-bluez,silent-snowman/bluez,pkarasev3/bluez,pstglia/external-bluetooth-bluez,silent-snowman/bluez,ComputeCycles/bluez,ComputeCycles/bluez,pkarasev3/bluez,silent-snowman/bluez,pkarasev3/bluez,pstglia/external-bluetooth-bluez,ComputeCycles/bluez,pstglia/external-bluetooth-bluez,mapfau/bluez,silent-snowman/bluez,pkarasev3/bluez