File n_add-Mesa-headers-again.patch of Package Mesa

Index: mesa-20.2.0/include/meson.build
===================================================================
--- mesa-20.2.0.orig/include/meson.build
+++ mesa-20.2.0/include/meson.build
@@ -29,10 +29,8 @@ if with_android_stub
   inc_include += [include_directories('android_stub')]
 endif
 
-if not with_glvnd
   if with_gles1 or with_gles2 or with_opengl or with_egl
     install_headers('KHR/khrplatform.h', subdir : 'KHR')
-  endif
 
   if with_gles1
     install_headers(