INDEX build failed for 11.x

[Ports Index build]

INDEX build failed with errors:
Generating INDEX-11 - please wait..--- describe.accessibility ---
--- describe.arabic ---
--- describe.archivers ---
--- describe.astro ---
--- describe.audio ---
--- describe.benchmarks ---
--- describe.biology ---
--- describe.cad ---
--- describe.chinese ---
--- describe.comms ---
--- describe.converters ---
--- describe.databases ---
--- describe.deskutils ---
--- describe.devel ---
--- describe.dns ---
--- describe.editors ---
--- describe.emulators ---
--- describe.finance ---
--- describe.french ---
--- describe.ftp ---
--- describe.games ---
--- describe.german ---
--- describe.graphics ---
make[5]: "/home/indexbuild/tindex/ports/graphics/dspdfviewer/Makefile" line 50: Malformed conditional (${OPSYS} == FreeBSD && && ${CHOSEN_COMPILER_TYPE} == clang)
make[5]: Fatal errors encountered -- cannot continue===> graphics/dspdfviewer failed
*** [describe.graphics] Error code 1

make[2]: stopped in /home/indexbuild/tindex/ports

make[2]: stopped in /home/indexbuild/tindex/ports
*** Error code 1

Stop.
make[1]: stopped in /home/indexbuild/tindex/ports
*** Error code 1

Stop.
make: stopped in /home/indexbuild/tindex/ports
1 error

Committers on the hook:
 joneum jpaetzel osa pkubaj rene zeising 

Most recent SVN update was:
Updating '.':
U    www/unit-perl/Makefile
U    www/unit-php/Makefile
U    www/unit-python/Makefile
U    www/unit-ruby/Makefile
U    www/gohugo/Makefile
U    www/gohugo/distinfo
U    www/falkon/pkg-message
U    misc/iio-oscilloscope/Makefile
D    misc/iio-oscilloscope/files/patch-plugins_lidar.c
D    misc/iio-oscilloscope/files/patch-osc.c
A    graphics/waifu2x-ncnn-vulkan/files
A    graphics/waifu2x-ncnn-vulkan/files/patch-src_ncnn_CMakeLists.txt
A    graphics/waifu2x-ncnn-vulkan/files/patch-src_ncnn_src_layer_interp.cpp
U    graphics/linux-c7-libdrm/Makefile
U    graphics/dspdfviewer/Makefile
U    graphics/drm-fbsd11.2-kmod/pkg-descr
U    graphics/jp2a/Makefile
U    sysutils/ebsnvme-id/Makefile
U    devel/redo/Makefile
D    cad/iverilog/files
U    cad/iverilog/Makefile
U    cad/iverilog/distinfo
U    cad/iverilog/pkg-plist
U    emulators/i386-wine/Makefile.amd64
U    emulators/i386-wine-devel/Makefile.amd64
U    emulators/open-vm-tools/Makefile
U    emulators/open-vm-tools/files/vmware-guestd.in
U    net-im/pidgin-sipe/Makefile
U    x11-wm/wmakerconf/Makefile
Updated to revision 552899.