Added result check for calls to itti_free.

common/utils/itti/intertask_interface.c

common/utils/itti/intertask_interface_dump.c

openair-cn/NAS/nas_ue_task.c

openair-cn/S1AP/s1ap_eNB.c

openair-cn/SCTP/sctp_eNB_task.c

openair1/SCHED/phy_procedures_lte_eNb.c

openair1/SCHED/phy_procedures_lte_ue.c

openair2/ENB_APP/enb_app.c

openair2/LAYER2/MAC/eNB_scheduler.c

openair2/LAYER2/MAC/ue_procedures.c

openair2/LAYER2/PDCP_v10.1.0/pdcp.c

openair2/RRC/LITE/rrc_UE.c

openair2/RRC/LITE/rrc_eNB.c

targets/RTAI/USER/lte-enb.c

targets/RTAI/USER/lte-softmodem.c

targets/SIMU/USER/oaisim.c