tree 2b018415e63d6be1b2bc0c6434840979b2145e68
parent 7bfaba51b0477cbb87743cc45c64fad6b0b14d8d
author Pau Espin Pedrol <pespin@sysmocom.de> 1569512787 +0200
committer Pau Espin Pedrol <pespin@sysmocom.de> 1569512790 +0200

msgb: Allow size==headroom in msgb_alloc_headroom*()

Nothinh really forbids this case, it's totally fine allocating all space
of msgb as headroom. osmo-pcu actually does that in
gprs_rlcmac_ul_tbf::snd_ul_ud().

Related: OS#4029
Change-Id: Ibe05d08e3169a2603e891f76682a3b352a93ec7a