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

Test case: http://jutaky.com/fuzzing/gnumeric_case_15172_4911.2ods.xls

$ ssconvert gnumeric_case_15172_4911.2ods.xls /tmp/out.ods

==1302==ERROR: AddressSanitizer: SEGV on unknown address 0x000000000028 (pc 0x7f7e7134ca63 bp 0x7fffafba4ff0 sp 0x7fffafba4460 T0)
    #0 0x7f7e7134ca62 in odf_write_cell gnumeric/gnumeric/plugins/openoffice/openoffice-write.c:3384:18
    #1 0x7f7e713485bc in odf_write_content_rows gnumeric/gnumeric/plugins/openoffice/openoffice-write.c:3886:5
    #2 0x7f7e7133e34c in odf_write_sheet gnumeric/gnumeric/plugins/openoffice/openoffice-write.c:3967:3
    #3 0x7f7e712ba9bb in odf_write_content gnumeric/gnumeric/plugins/openoffice/openoffice-write.c:4969:3
    #4 0x7f7e712b6c9d in openoffice_file_save_real gnumeric/gnumeric/plugins/openoffice/openoffice-write.c:8909:12
    #5 0x7f7e712b81b6 in odf_file_save gnumeric/gnumeric/plugins/openoffice/openoffice-write.c:9014:2
    #6 0x7f7e95e732aa in go_plugin_loader_module_func_file_save gnumeric/goffice/goffice/app/go-plugin-loader-module.c:366:2
    #7 0x7f7e95e82b11 in go_plugin_file_saver_save gnumeric/goffice/goffice/app/go-plugin-service.c:948:2
    #8 0x7f7e95e9cb74 in go_file_saver_save gnumeric/goffice/goffice/app/file.c:848:2
    #9 0x7f7e97817053 in wbv_save_to_output gnumeric/gnumeric/src/workbook-view.c:1059:2
    #10 0x7f7e97817adf in wb_view_save_to_uri gnumeric/gnumeric/src/workbook-view.c:1093:3
    #11 0x7f7e978192c3 in wb_view_save_as gnumeric/gnumeric/src/workbook-view.c:1129:2
    #12 0x4e29ec in convert gnumeric/gnumeric/src/ssconvert.c:831:9
    #13 0x4decce in main gnumeric/gnumeric/src/ssconvert.c:903:9
    #14 0x7f7e902ab78f in __libc_start_main (/usr/lib/libc.so.6+0x2078f)
    #15 0x437b98 in _start (apps/bin/ssconvert+0x437b98)

AddressSanitizer can not provide additional info.
SUMMARY: AddressSanitizer: SEGV gnumeric/gnumeric/plugins/openoffice/openoffice-write.c:3384 odf_write_cell

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Juha Kylmänen