==37469== Conditional jump or move depends on uninitialised value(s)
==37469==    at 0x446D0B: calcitem_parse_expression (checks_calculated.c:147)
==37469==    by 0x447641: get_value_calculated (checks_calculated.c:324)
==37469==    by 0x441247: get_value (poller.c:395)
==37469==    by 0x44381C: zbx_check_items (poller.c:742)
==37469==    by 0x444343: get_values (poller.c:841)
==37469==    by 0x444BDD: poller_thread (poller.c:1006)
==37469==    by 0x5D6A03: zbx_thread_start (threads.c:136)
==37469==    by 0x4265D2: MAIN_ZABBIX_ENTRY (server.c:1207)
==37469==    by 0x5C6590: daemon_start (daemon.c:394)
==37469==    by 0x425B68: main (server.c:951)
==37469==  Uninitialised value was created by a stack allocation
==37469==    at 0x446960: calcitem_parse_expression (checks_calculated.c:88)