David King authored Jul 16, 2015 and Paolo Bacchilega committed Dec 13, 2015

Found with Valgrind:

==9376== 65 bytes in 1 blocks are definitely lost in loss record 11,501
of 17,916
==9376==    at 0x4C2DB9D: realloc (in
/usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so)
==9376==    by 0x7FB1F9A: vasprintf (in /usr/lib64/libc-2.21.90.so)
==9376==    by 0x74C8E90: g_vasprintf (gprintf.c:316)
==9376==    by 0x74A43CF: g_strdup_vprintf (gstrfuncs.c:507)
==9376==    by 0x74A446B: g_strdup_printf (gstrfuncs.c:533)
==9376==    by 0x446556: query_info_ready_for_overwrite_dialog_cb
(fr-window.c:6496)
==9376==    by 0x6EEA4E8: g_task_return_now (gtask.c:1104)
==9376==    by 0x6EEA528: complete_in_idle_cb (gtask.c:1118)
==9376==    by 0x7485C89: g_main_dispatch (gmain.c:3122)
==9376==    by 0x7485C89: g_main_context_dispatch (gmain.c:3737)
==9376==    by 0x7486007: g_main_context_iterate.isra.29 (gmain.c:3808)
==9376==    by 0x74860AB: g_main_context_iteration (gmain.c:3869)
==9376==    by 0x6F0F5BB: g_application_run (gapplication.c:2311)
==9376==    by 0x414FE5: main (main.c:38)

https://bugzilla.gnome.org/show_bug.cgi?id=752476