[PATCH] fix memleak at edit_set_spell_lang()

[and]

when changing spelling language lang variable not freed

found by Clang/AddressSanitizer?

Direct leak of 13 byte(s) in 1 object(s) allocated from:
    #0 0x4c7c30 in malloc (/tmp/portage/app-misc/mc-9999/work/mc-9999/src/.libs/mc+0x4c7c30)
    #1 0x7fdc5aac0d38 in g_malloc (/usr/lib64/libglib-2.0.so.0+0x66d38)
    #2 0x7fdc5aae9011 in g_strdup (/usr/lib64/libglib-2.0.so.0+0x8f011)
    #3 0x5b004d in edit_set_spell_lang /tmp/portage/app-misc/mc-9999/work/mc-9999/src/editor/editcmd.c:3689:16
    #4 0x593d2a in edit_execute_cmd /tmp/portage/app-misc/mc-9999/work/mc-9999/src/editor/edit.c:3848:9
    #5 0x591e3a in edit_execute_key_command /tmp/portage/app-misc/mc-9999/work/mc-9999/src/editor/edit.c:3224:5
    #6 0x5c12b2 in edit_callback /tmp/portage/app-misc/mc-9999/work/mc-9999/src/editor/editwidget.c:1146:9
    #7 0x7fdc5b795ea9 in menubar_execute /tmp/portage/app-misc/mc-9999/work/mc-9999/lib/widget/menu.c:341:9
    #8 0x7fdc5b7944f2 in menubar_handle_key /tmp/portage/app-misc/mc-9999/work/mc-9999/lib/widget/menu.c:539:13
    #9 0x7fdc5b792550 in menubar_callback /tmp/portage/app-misc/mc-9999/work/mc-9999/lib/widget/menu.c:597:13
    #10 0x7fdc5b77c113 in dlg_try_hotkey /tmp/portage/app-misc/mc-9999/work/mc-9999/lib/widget/dialog.c:450:19
    #11 0x7fdc5b77b4c0 in dlg_key_event /tmp/portage/app-misc/mc-9999/work/mc-9999/lib/widget/dialog.c:509:19
    #12 0x7fdc5b77b982 in frontend_dlg_run /tmp/portage/app-misc/mc-9999/work/mc-9999/lib/widget/dialog.c:570:9
    #13 0x7fdc5b77b685 in dlg_run /tmp/portage/app-misc/mc-9999/work/mc-9999/lib/widget/dialog.c:1267:5
    #14 0x5c0171 in edit_files /tmp/portage/app-misc/mc-9999/work/mc-9999/src/editor/editwidget.c:1255:9
    #15 0x5bfcaf in edit_file /tmp/portage/app-misc/mc-9999/work/mc-9999/src/editor/editwidget.c:1194:10
    #16 0x5ef09b in edit_file_at_line /tmp/portage/app-misc/mc-9999/work/mc-9999/src/filemanager/cmd.c:704:9
    #17 0x5ef20b in edit_cmd /tmp/portage/app-misc/mc-9999/work/mc-9999/src/filemanager/cmd.c:742:9
    #18 0x52d687 in midnight_execute_cmd /tmp/portage/app-misc/mc-9999/work/mc-9999/src/filemanager/midnight.c:1175:9
    #19 0x7fdc5b776059 in buttonbar_callback /tmp/portage/app-misc/mc-9999/work/mc-9999/lib/widget/buttonbar.c:172:42
    #20 0x7fdc5b77c1cc in dlg_try_hotkey /tmp/portage/app-misc/mc-9999/work/mc-9999/lib/widget/dialog.c:464:23
    #21 0x7fdc5b77b4c0 in dlg_key_event /tmp/portage/app-misc/mc-9999/work/mc-9999/lib/widget/dialog.c:509:19
    #22 0x7fdc5b77b982 in frontend_dlg_run /tmp/portage/app-misc/mc-9999/work/mc-9999/lib/widget/dialog.c:570:9
    #23 0x7fdc5b77b685 in dlg_run /tmp/portage/app-misc/mc-9999/work/mc-9999/lib/widget/dialog.c:1267:5
    #24 0x52bb1d in do_nc /tmp/portage/app-misc/mc-9999/work/mc-9999/src/filemanager/midnight.c:1757:9
    #25 0x4f94b7 in main /tmp/portage/app-misc/mc-9999/work/mc-9999/src/main.c:463:21
    #26 0x7fdc59b96953 in __libc_start_main (/lib64/libc.so.6+0x20953)
    #27 0x427408 in _start (/tmp/portage/app-misc/mc-9999/work/mc-9999/src/.libs/mc+0x427408)

SUMMARY: AddressSanitizer: 13 byte(s) leaked in 1 allocation(s).

Signed-off-by: Andreas Mohr <and@…>

[and]

attached another memleak fix to this ticket because of same src/editor/editcmd.c location

[andrew_b]

mc-3572-fix-memleak-at-edit_set_spell_lang.patch​: [31e4b2b57a4dc5e5a950e2f0abc661c0c38f026a]
mc-3572-fix-memleak-at-edit_sort_cmd.patch​: [212ed8f5a0c031ea595e214ff6949c0d2403009d]