hello_xr: Make sure to link gfxwrapper to gdi32

Author: rpavlik

src/CMakeLists.txt

@@ -194,6 +194,10 @@ if((OPENGL_FOUND OR OpenGLES_FOUND) AND EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/comm
         )
     endif()
     set_target_properties(openxr-gfxwrapper PROPERTIES FOLDER ${HELPER_FOLDER})
+    if(WIN32)
+        target_link_libraries(openxr-gfxwrapper PUBLIC gdi32)
+    endif()
+
     message(STATUS "Enabling OpenGL support in hello_xr, loader_test, and conformance, if configured")
 endif()