README.md: remove trailing space

Signed-off-by: Petar Koretic <petar.koretic@sartura.hr>
pcap: limit capture to 50% of free space

Signed-off-by: Petar Koretic <petar.koretic@sartura.hr>
uclient: set correct variable type

Signed-off-by: Petar Koretic <petar.koretic@sartura.hr>