graphics/magnum-integration: mark BROKEN

[00:03:39] FAILED: src/Magnum/ImGuiIntegration/CMakeFiles/MagnumImGuiIntegration.dir/Context.cpp.o
[00:03:39] /usr/local/libexec/ccache/c++ -DMagnumImGuiIntegration_EXPORTS -I/wrkdirs/usr/ports/graphics/magnum-integration/work/magnum-integration-2020.06-264-g50ac4db/src -I/wrkdirs/usr/ports/graphics/magnum-integration/work/.build/src -isystem /usr/local/include -O2 -pipe -fstack-protector-strong -fno-strict-aliasing -O2 -pipe -fstack-protector-strong -fno-strict-aliasing -DNDEBUG -fPIC -Wall -Wextra -Wold-style-cast -Winit-self -Werror=return-type -Wmissing-declarations -Wpedantic -fvisibility=hidden -fvisibility-inlines-hidden -fno-strict-aliasing -Wmissing-prototypes -Wno-shorten-64-to-32 -MD -MT src/Magnum/ImGuiIntegration/CMakeFiles/MagnumImGuiIntegration.dir/Context.cpp.o -MF src/Magnum/ImGuiIntegration/CMakeFiles/MagnumImGuiIntegration.dir/Context.cpp.o.d -o src/Magnum/ImGuiIntegration/CMakeFiles/MagnumImGuiIntegration.dir/Context.cpp.o -c /wrkdirs/usr/ports/graphics/magnum-integration/work/magnum-integration-2020.06-264-g50ac4db/src/Magnum/ImGuiIntegration/Context.cpp
[00:03:39] /wrkdirs/usr/ports/graphics/magnum-integration/work/magnum-integration-2020.06-264-g50ac4db/src/Magnum/ImGuiIntegration/Context.cpp:322:23: error: no member named 'TextureId' in 'ImDrawCmd'
[00:03:39] 322 | pcmd->TextureId,
[00:03:39] | ~~~~ ^
[00:03:39] 1 error generated.