[grps] Fix GTP data_ind call back message creation

We'll need to push data both before and after, so make sure there
is both headroom & tailroom

Signed-off-by: Sylvain Munaut <tnt@246tNt.com>
1 file changed
tree: 6d06f2214c36f859c30d3adf7dd5a4ce607d7bb8
  1. hlrsync/
  2. linux-kernel/
  3. openbsc/
  4. rrlp-ephemeris/
  5. wireshark/