gnome-gpg.c:176: error: ignoring return value of 'write', declared with attribute warn_unused_result

Gnome-gpg FTBFS on karmic due to:

gcc -DHAVE_CONFIG_H -I. -DG_LOG_DOMAIN=\"Gnome-GPG\" -I. -D_REENTRANT -DORBIT2=1 -pthread -I/usr/include/gtk-2.0 -I/usr/lib/gtk-2.0/include -I/usr/include/atk-1.0 -I/usr/include/cairo -I/usr/include/pango-1.0 -I/usr/include/pixman-1 -I/usr/include/freetype2 -I/usr/include/directfb -I/usr/include/libpng12 -I/usr/include/glib-2.0 -I/usr/lib/glib-2.0/include -I/usr/include/libgnomeui-2.0 -I/usr/include/libart-2.0 -I/usr/include/gconf/2 -I/usr/include/gnome-keyring-1 -I/usr/include/libgnome-2.0 -I/usr/include/libbonoboui-2.0 -I/usr/include/libgnomecanvas-2.0 -I/usr/include/gnome-vfs-2.0 -I/usr/lib/gnome-vfs-2.0/include -I/usr/include/orbit-2.0 -I/usr/include/dbus-1.0 -I/usr/lib/dbus-1.0/include -I/usr/include/libbonobo-2.0 -I/usr/include/bonobo-activation-2.0 -I/usr/include/libxml2 -I/usr/include/gail-1.0 -D_XOPEN_SOURCE -D_BSD_SOURCE -g -O2 -g -Wall -O2 -Werror -std=c89 -Wcast-align -Wsign-compare -Wnested-externs -Wpointer-arith -Wchar-subscripts -Wmissing-declarations -Wmissing-prototypes -Wno-strict-aliasing -Wno-sign-compare -Wdeclaration-after-statement -c gnome-gpg.c
cc1: warnings being treated as errors
gnome-gpg.c: In function 'handle_get_passphrase':
gnome-gpg.c:176: error: ignoring return value of 'write', declared with attribute warn_unused_result
gnome-gpg.c:177: error: ignoring return value of 'write', declared with attribute warn_unused_result
make[2]: *** [gnome-gpg.o] Error 1

See: http://launchpadlibrarian.net/26494855/buildlog_ubuntu-karmic-i386.gnome-gpg_0.6.0-1_FAILEDTOBUILD.txt.gz