fixed small bug if ihf_chf field is missing...which it shouldn't ever be, but whatever
fixed small bug if ihf_chf field is missing...which it shouldn't ever be, but whatever

qedsoftware/commcare-hq,qedsoftware/commcare-hq,qedsoftware/commcare-hq,puttarajubr/commcare-hq,SEL-Columbia/commcare-hq,puttarajubr/commcare-hq,puttarajubr/commcare-hq,dimagi/commcare-hq,dimagi/commcare-hq,dimagi/commcare-hq,SEL-Columbia/commcare-hq,SEL-Columbia/commcare-hq,dimagi/commcare-hq,puttarajubr/commcare-hq,qedsoftware/commcare-hq,qedsoftware/commcare-hq,dimagi/commcare-hq