Bug 861253

Description of problem:
This crash is reproducible every time for me, and is quite annoying because it has created bogus "search folders" that I haven't figured out a way to delete from the user interface!

STEPS TO REPRODUCE:

1. Set up Liferea with Google Reader sync
   - Google Reader must contain at least one "Label" or "Folder"

2. Highlight one of the Google Reader folders

3. Select "Subscriptions / New Search Folder..."

4. Click "OK" to create "New Search Folder" as a child of the Google Reader folder

5. Right-click on newly created "New Search Folder" and select "Delete" (perhaps because you didn't mean to create the folder as a child of a GReader folder)

EXPECTED BEHAVIOR:
-- "New Search Folder" is deleted and program continues to operate
-- Also perhaps it should not be possible to create Search Folders as children of GReader folders
-- Also upon starting Liferea and refreshing the Google Reader account, bogus "Search Folders" under GReader categories should be removed

ACTUAL BEHAVIOR:
-- On attempting to delete the Search Folder, Liferea always crashes with SIGSEGV
-- Search folder may or may not be deleted
-- If the Search folder was not deleted on the first attempt, future attempts also fail and the Search Folder cannot be removed at all


Version-Release number of selected component:
liferea-1.8.8-1.fc17

Additional info:
libreport version: 2.0.13
abrt_version:   2.0.12
backtrace_rating: 4
cmdline:        liferea
crash_function: google_source_remove_node
kernel:         3.5.4-1.fc17.x86_64

truncated backtrace:
:Thread no. 1 (10 frames)
: #0 google_source_remove_node at google_source.c
: #1 feed_list_view_delete_response_cb at feed_list_view.c
: #2 g_cclosure_marshal_VOID__INTv at gmarshal.c
: #3 _g_closure_invoke_va at gclosure.c
: #9 gtk_real_button_released at gtkbutton.c
: #11 _g_closure_invoke_va at gclosure.c
: #14 gtk_button_button_release at gtkbutton.c
: #16 _gtk_marshal_BOOLEAN__BOXED at gtkmarshalers.c
: #21 gtk_widget_event_internal at gtkwidget.c
: #22 gtk_widget_event at gtkwidget.c