cap.c: fix minor compilation warnings

  CC     cap.lo
cap.c: In function ‘get_cap_mask’:
cap.c:119: warning: comparison between signed and unsigned
cap.c: In function ‘build_cap_str’:
cap.c:143: warning: comparison between signed and unsigned

Signed-off-by: Kir Kolyshkin <kir@openvz.org>
1 file changed