investigating bugdoc from bug 37390 comment #12 revealed: LO may write the following attributes with a value of 0, even though they have the type positiveInteger: 20.191 fo:hyphenation-push-char-count 20.192 fo:hyphenation-remain-char-count
fixed on master: http://cgit.freedesktop.org/libreoffice/core/commit/?id=59a5c37d0df9b5612552c4b749191385ca0adc80 fixed on libreoffice-3-5: http://cgit.freedesktop.org/libreoffice/core/commit/?h=libreoffice-3-5&id=62b9587a0d62a02aaab2ac7a4b34efb2ade16d7b will propose for 3.4.5
fixed in libreoffice-3-4-5: http://cgit.freedesktop.org/libreoffice/libs-core/commit/?h=libreoffice-3-4-5&id=63ecdc34d14e7c543dd2a435e54d084f8c2325d8