dvb/si/desc_51: Undefine locally defined macro after finishing its use.
dvb/si/desc_51: Undefine locally defined macro after finishing its use.

theambient/bitstream_c,theambient/bitstream_c,kierank/bitstream,avble/bitstream,kgmoore/bitstream,hiroshiyui/bitstream,gfto/bitstream,svogl/bitstream,avble/bitstream,kgmoore/bitstream,kgmoore/bitstream,svogl/bitstream,kierank/bitstream,hiroshiyui/bitstream,avble/bitstream,svogl/bitstream,gfto/bitstream,hiroshiyui/bitstream