[patch] fix memleak at editor/editcmd_dialogs.c:editcmd_dialog_search_show()

[and]

fix memleak at editor/editcmd_dialogs.c:editcmd_dialog_search_show()

edit->last_search_string never freed when editor closed

found by LeakSanitizer?

Direct leak of 8 byte(s) in 1 object(s) allocated from:

#0 0x4d60a5 in realloc (/tmp/portage/app-misc/mc-9999/work/mc-9999/src/mc+0x4d60a5)
#1 0x7f9bc7bfe90d in g_realloc (/usr/lib64/libglib-2.0.so.0+0x6790d)
#2 0x7f9bc7c28493 in g_string_sized_new (/usr/lib64/libglib-2.0.so.0+0x91493)
#3 0x7f9bc7c28e82 in g_string_new (/usr/lib64/libglib-2.0.so.0+0x91e82)
#4 0x747de3 in editcmd_dialog_search_show /tmp/portage/app-misc/mc-9999/work/mc-9999/src/editor/editcmd_dialogs.c:152:15
#5 0x73caa2 in edit_search /tmp/portage/app-misc/mc-9999/work/mc-9999/src/editor/editcmd.c:1037:9
#6 0x70e518 in edit_execute_cmd /tmp/portage/app-misc/mc-9999/work/mc-9999/src/editor/edit.c:3817:9
#7 0x70bfc6 in edit_execute_key_command /tmp/portage/app-misc/mc-9999/work/mc-9999/src/editor/edit.c:3223:5
#8 0x76459a in edit_callback /tmp/portage/app-misc/mc-9999/work/mc-9999/src/editor/editwidget.c:1136:17
#9 0x519c47 in buttonbar_callback /tmp/portage/app-misc/mc-9999/work/mc-9999/lib/widget/buttonbar.c:172:42
#10 0x531415 in dlg_try_hotkey /tmp/portage/app-misc/mc-9999/work/mc-9999/lib/widget/dialog.c:464:23
#11 0x52fbfa in dlg_key_event /tmp/portage/app-misc/mc-9999/work/mc-9999/lib/widget/dialog.c:509:19
#12 0x530546 in frontend_dlg_run /tmp/portage/app-misc/mc-9999/work/mc-9999/lib/widget/dialog.c:570:9
#13 0x530165 in dlg_run /tmp/portage/app-misc/mc-9999/work/mc-9999/lib/widget/dialog.c:1267:5
#14 0x76240a in edit_files /tmp/portage/app-misc/mc-9999/work/mc-9999/src/editor/editwidget.c:1255:9
#15 0x761988 in edit_file /tmp/portage/app-misc/mc-9999/work/mc-9999/src/editor/editwidget.c:1194:10
#16 0x7a6bcb in edit_file_at_line /tmp/portage/app-misc/mc-9999/work/mc-9999/src/filemanager/cmd.c:701:9
#17 0x7dbcbf in find_do_view_edit /tmp/portage/app-misc/mc-9999/work/mc-9999/src/filemanager/find.c:1359:9
#18 0x7db810 in view_edit_currently_selected_file /tmp/portage/app-misc/mc-9999/work/mc-9999/src/filemanager/find.c:1379:5
#19 0x52fbea in dlg_key_event /tmp/portage/app-misc/mc-9999/work/mc-9999/lib/widget/dialog.c:505:15
#20 0x530546 in frontend_dlg_run /tmp/portage/app-misc/mc-9999/work/mc-9999/lib/widget/dialog.c:570:9
#21 0x530165 in dlg_run /tmp/portage/app-misc/mc-9999/work/mc-9999/lib/widget/dialog.c:1267:5
#22 0x7d850e in run_process /tmp/portage/app-misc/mc-9999/work/mc-9999/src/filemanager/find.c:1604:11
#23 0x7d4a83 in do_find /tmp/portage/app-misc/mc-9999/work/mc-9999/src/filemanager/find.c:1645:20
#24 0x7d2102 in find_file /tmp/portage/app-misc/mc-9999/work/mc-9999/src/filemanager/find.c:1780:13
#25 0x5a688e in midnight_execute_cmd /tmp/portage/app-misc/mc-9999/work/mc-9999/src/filemanager/midnight.c:1209:9
#26 0x5a2704 in midnight_callback /tmp/portage/app-misc/mc-9999/work/mc-9999/src/filemanager/midnight.c:1559:21
#27 0x52fcae in dlg_key_event /tmp/portage/app-misc/mc-9999/work/mc-9999/lib/widget/dialog.c:519:19
#28 0x530546 in frontend_dlg_run /tmp/portage/app-misc/mc-9999/work/mc-9999/lib/widget/dialog.c:570:9
#29 0x530165 in dlg_run /tmp/portage/app-misc/mc-9999/work/mc-9999/lib/widget/dialog.c:1267:5

Signed-off-by: Andreas Mohr <and@…>

[andrew_b]

Thanks!
Applied as [216067a43c73a6e4c4462eca7a28ed9b5ab30608].