bpf.lua: fix detaching uprobes and kprobes
bpf.lua: fix detaching uprobes and kprobes

tuxology/bcc,mkacik/bcc,mkacik/bcc,shodoco/bcc,romain-intel/bcc,mcaleavya/bcc,romain-intel/bcc,iovisor/bcc,tuxology/bcc,mkacik/bcc,romain-intel/bcc,tuxology/bcc,shodoco/bcc,brendangregg/bcc,romain-intel/bcc,shodoco/bcc,zaafar/bcc,brendangregg/bcc,shodoco/bcc,mkacik/bcc,mcaleavya/bcc,tuxology/bcc,iovisor/bcc,mcaleavya/bcc,romain-intel/bcc,iovisor/bcc,mkacik/bcc,shodoco/bcc,brendangregg/bcc,iovisor/bcc,zaafar/bcc,zaafar/bcc,mcaleavya/bcc,tuxology/bcc,zaafar/bcc,zaafar/bcc,brendangregg/bcc,brendangregg/bcc,mcaleavya/bcc,iovisor/bcc