cmake: fix OPENGL_LIBRARIES handling

Author: alalek

modules/rgbd/CMakeLists.txt

@@ -5,3 +5,7 @@ ocv_define_module(rgbd opencv_core opencv_calib3d opencv_imgproc OPTIONAL opencv
 if(NOT HAVE_EIGEN)
   message(STATUS "rgbd: Eigen support is disabled. Eigen is Required for Posegraph optimization")
 endif()
+
+if(HAVE_OPENGL)
+  ocv_target_link_libraries(${the_module} PRIVATE "${OPENGL_LIBRARIES}")
+endif()