testsuite: add missing test for FindProblemByElementInTimeRange

Signed-off-by: Matej Habrnal <mhabrnal@redhat.com>
dbus: fixed abrt-dbus memory leaks

Fixed memory leaks in abrt-dbus (method FindProblemByElementInTimeRange).
This method leaks memory if fuzzing on org.freedesktop.problems interface.

Related to rhbz#1015473

Signed-off-by: Matej Habrnal <mhabrnal@redhat.com>
Merge pull request #852 from abrt/rhbz1015473_abrt-dbus_leaks_memory

Fixed memory leaks in abrt-dbus