xine needs fix for new png port

[Kevin Oberman]

xine fails to build with the new graphics/png port. I get:
cc -I/usr/local/include   -I/usr/local/include    -I/usr/include/readline -I../../src/xitk/xine-toolkit -Wall -D_FILE_OFFSET_BITS=64 -Wpointer-arith -Wnested-externs -Wcast-align -Wchar-subscripts -Wmissing-declarations -Wmissing-prototypes -L/usr/local/lib  -O2 -pipe -fno-strict-aliasing -I/usr/local/include     -DNDEBUG -Wformat=2 -Wno-format-zero-length -Wmissing-format-attribute -Wstrict-aliasing=2  -L/usr/local/lib -o xine  actions.o config_wrapper.o control.o download.o errors.o event.o event_sender.o file_browser.o frequencies.o help.o kbindings.o lang.o lirc.o main.o mediamark.o menus.o mrl_browser.o network.o osd.o panel.o playlist.o post.o session.o setup.o skins.o snapshot.o splash.o stdctl.o stream_infos.o tvout.o tvset.o videowin.o viewlog.o -pthread -L/usr/local/lib -lxine -lz -liconv -lrt   ../../src/xitk/xine-toolkit/libxitk.a ../../src/xitk/Imlib-light/libImlib-light.a ../../src/xitk/oxine/liboxine.a ../../src/common/libcommon.a ../../src/common/libcommonx.a 
 -L/usr/local/lib -lXinerama   -L/usr/local/lib -lXxf86vm     -L/usr/local/lib -lXft -lXrender -lfontconfig -lfreetype -lX11    -L/usr/local/lib -lXtst   -rpath=/usr/lib:/usr/local/lib -L/usr/local/lib -lcurl    -lX11 -lm  -L/usr/local/lib -lXv   -L/usr/local/lib -lpng -lz -lm   /usr/local/lib/libintl.so /usr/local/lib/libiconv.so -Wl,-rpath -Wl,/usr/local/lib -pthread 
../../src/xitk/Imlib-light/libImlib-light.a(libImlib_light_a-load.o)(.text+0x78): In function `ispng':
: undefined reference to `png_check_sig'
gmake[4]: *** [xine] Error 1
gmake[4]: Leaving directory `/usr/ports/multimedia/xine/work/xine-ui-0.99.5/src/xitk'
gmake[3]: *** [all-recursive] Error 1
gmake[3]: Leaving directory `/usr/ports/multimedia/xine/work/xine-ui-0.99.5/src/xitk'
gmake[2]: *** [all-recursive] Error 1
gmake[2]: Leaving directory `/usr/ports/multimedia/xine/work/xine-ui-0.99.5/src'
gmake[1]: *** [all-recursive] Error 1
gmake[1]: Leaving directory `/usr/ports/multimedia/xine/work/xine-ui-0.99.5'
gmake: *** [all] Error 2
*** Error code 1

Any hope for a quick fix?
-- 
R. Kevin Oberman, Network Engineer
Energy Sciences Network (ESnet)
Ernest O. Lawrence Berkeley National Laboratory (Berkeley Lab)
E-mail: oberman at es.net			Phone: +1 510 486-8634
Key fingerprint:059B 2DDF 031C 9BA3 14A4  EADA 927D EBB3 987B 3751