tools/bpf/bpftool: fix buffer handling in get_fd_type()#5866

kernel-patches-daemon-bpf-rc[bot] wants to merge 1 commit intobpf-next_basekernel-patches/bpf-rc:bpf-next_basefrom

series/997512=>bpf-nextkernel-patches/bpf-rc:series/997512=>bpf-nextCopy head branch name to clipboard