gprs: Fix compiler warnings in gprs_sndcp.c

  CC       gprs_sndcp.o
gprs_sndcp.c: In function ‘defrag_input’:
gprs_sndcp.c:188:25: warning: variable ‘scomph’ set but not used [-Wunused-but-set-variable]
  struct sndcp_comp_hdr *scomph = NULL;
                         ^
gprs_sndcp.c: In function ‘sndcp_llunitdata_ind’:
gprs_sndcp.c:512:11: warning: variable ‘npdu_num’ set but not used [-Wunused-but-set-variable]
  uint16_t npdu_num;
           ^
gprs_sndcp.c: At top level:
gprs_sndcp.c:565:12: warning: ‘sndcp_ll_reset_ind’ defined but not used [-Wunused-function]
 static int sndcp_ll_reset_ind(struct gprs_sndcp_entity *se)
            ^
gprs_sndcp.c:573:12: warning: ‘sndcp_ll_status_ind’ defined but not used [-Wunused-function]
 static int sndcp_ll_status_ind()
            ^
1 file changed
tree: 70dcb96998764a70352d58aaa8468521476aa33b
  1. debian/
  2. hlrsync/
  3. linux-kernel/
  4. openbsc/
  5. wireshark/
  6. README