bsc: Wait for immedate assignment in f_chreq_act_ack

Sometimes TC_chan_rel_hard_rlsd_ms_dead could fail because the Immediate
assignment command would arrive in the RSL queue after it was cleared in
f_expect_chan_rel. The alt statement would now never complete since the
Immediate Assignment was blocking/hogging the queue. Wait explicitly for
the IMM ASS in f_chreq_act_ack before continuing.

Change-Id: I2831d4caf7f045b3396d28a978328e8a1097d8d3
1 file changed