Git versions of gtk, glib, goffice, gnumeric, libgsf and libxml2.

Test case: http://jutaky.com/fuzzing/gnumeric_case_006-dependent.c.933.xls

$ ssconvert gnumeric_case_006-dependent.c.933.xls /tmp/out.gnumeric

==26127==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000000 (pc 0x7fccea2b6c4e bp 0x7ffd30cb3410 sp 0x7ffd30cb3300 T0)
    #0 0x7fccea2b6c4d in unlink_single_dep gnumeric/gnumeric/src/dependent.c:933:38
    #1 0x7fccea2a54f2 in link_unlink_single_dep gnumeric/gnumeric/src/dependent.c:952:5
    #2 0x7fccea2a54f2 in link_unlink_expr_dep gnumeric/gnumeric/src/dependent.c:1095
    #3 0x7fccea2a0e0f in dependent_unlink gnumeric/gnumeric/src/dependent.c:1560:2
    #4 0x7fccea2a07f6 in dependent_set_expr gnumeric/gnumeric/src/dependent.c:412:3
    #5 0x7fccea2a2c3d in dependent_managed_set_expr gnumeric/gnumeric/src/dependent.c:1329:2
    #6 0x7fccea54112a in gnm_style_cond_set_expr gnumeric/gnumeric/src/style-conditions.c:227:2
    #7 0x7fccea54112a in gnm_style_cond_free gnumeric/gnumeric/src/style-conditions.c:167
    #8 0x7fccea54112a in gnm_style_conditions_delete gnumeric/gnumeric/src/style-conditions.c:859
    #9 0x7fccea5428b7 in gnm_style_conditions_finalize gnumeric/gnumeric/src/style-conditions.c:666:3
    #10 0x7fcce54ea399 in g_object_unref gnumeric/glib/gobject/gobject.c:3183
    #11 0x7fccea38d19d in elem_clear_contents gnumeric/gnumeric/src/mstyle.c:499:4
    #12 0x7fccea38c5e9 in gnm_style_unref gnumeric/gnumeric/src/mstyle.c:732:4
    #13 0x7fccea38e46b in gnm_style_unlink gnumeric/gnumeric/src/mstyle.c:942:3
    #14 0x7fccea4f7142 in cell_tile_dtor gnumeric/gnumeric/src/sheet-style.c:478:4
    #15 0x7fccea4f7063 in cell_tile_dtor gnumeric/gnumeric/src/sheet-style.c:472:4
    #16 0x7fccea4f7063 in cell_tile_dtor gnumeric/gnumeric/src/sheet-style.c:472:4
    #17 0x7fccea4f7063 in cell_tile_dtor gnumeric/gnumeric/src/sheet-style.c:472:4
    #18 0x7fccea4f5eb8 in sheet_style_shutdown gnumeric/gnumeric/src/sheet-style.c:781:2
    #19 0x7fccea4510f5 in gnm_sheet_finalize gnumeric/gnumeric/src/sheet.c:4635:2
    #20 0x7fcce54ea399 in g_object_unref gnumeric/glib/gobject/gobject.c:3183
    #21 0x7fccea561945 in workbook_sheet_delete gnumeric/gnumeric/src/workbook.c:1124:2
    #22 0x7fccea566f22 in workbook_dispose gnumeric/gnumeric/src/workbook.c:177:3
    #23 0x7fcce54ea324 in g_object_unref gnumeric/glib/gobject/gobject.c:3146
    #24 0x4e02a2 in convert gnumeric/gnumeric/src/ssconvert.c:849:3
    #25 0x4dc6f4 in main gnumeric/gnumeric/src/ssconvert.c:918:19
    #26 0x7fcce45d560f in __libc_start_main (/usr/lib/libc.so.6+0x2060f)
    #27 0x41a688 in _start (apps/bin/ssconvert+0x41a688)

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Juha Kylmänen