tracker-store: Fix invalid memory access on too large result set
tracker-store: Fix invalid memory access on too large result set

tracker_dbus_request_end was called twice if D-Bus reply was too large.

Fixes NB#224993.

outofbits/tracker,hoheinzollern/tracker,outofbits/tracker,hoheinzollern/tracker,hoheinzollern/tracker,outofbits/tracker,hoheinzollern/tracker,hoheinzollern/tracker,outofbits/tracker,outofbits/tracker,outofbits/tracker,hoheinzollern/tracker,outofbits/tracker,hoheinzollern/tracker