Description of problem:
Tried to set up a custom message filter (header X-Bugzilla-who contains endoflife).

Version-Release number of selected component:
evolution-3.13.10-2.fc22

Additional info:
reporter:       libreport-2.3.0
backtrace_rating: 4
cmdline:        /usr/bin/evolution
crash_function: filter_input_validate
executable:     /usr/bin/evolution
kernel:         3.19.0-1.fc22.x86_64
runlevel:       N 5
type:           CCpp
uid:            1001

Truncated backtrace:
Thread no. 1 (10 frames)
 #0 filter_input_validate at e-filter-input.c:82
 #1 e_filter_part_validate at e-filter-part.c:97
 #2 filter_rule_validate at e-filter-rule.c:401
 #3 e_shell_content_run_advanced_search_dialog at e-shell-content.c:682
 #4 action_search_advanced_cb at e-shell-window-actions.c:491
 #9 _gtk_action_emit_activate at /lib64/libgtk-3.so.0
 #14 gtk_widget_activate at /lib64/libgtk-3.so.0
 #15 gtk_menu_shell_activate_item at /lib64/libgtk-3.so.0
 #16 gtk_menu_shell_button_release at /lib64/libgtk-3.so.0
 #17 _gtk_marshal_BOOLEAN__BOXEDv at /lib64/libgtk-3.so.0