fix argument to xmlSaveToBuffer
fix argument to xmlSaveToBuffer

Last argument is an int for options

CodeFridge/libxmljs_mem,libxmljs/libxmljs,Konsus/libxml,CodeFridge/libxmljs_mem,polotek/libxmljs,apeace/libxmljs,sergeche/libxmljs,improvisio-software/libxmljs,rchipka/libxmljs,rc0x03/libxmljs,polotek/libxmljs,Konsus/libxml,hildjj/libxmljs,rc0x03/libxmljs,improvisio-software/libxmljs,gagern/libxmljs,hildjj/libxmljs,libxmljs/libxmljs,sergeche/libxmljs,libxmljs/libxmljs,rchipka/libxmljs,gagern/libxmljs,Visya/libxmljs,Konsus/libxml,sergeche/libxmljs,Visya/libxmljs,CodeFridge/libxmljs_mem,improvisio-software/libxmljs,gagern/libxmljs,Visya/libxmljs,rc0x03/libxmljs,hildjj/libxmljs,polotek/libxmljs,apeace/libxmljs,rchipka/libxmljs