renderer: use is_buffer flag on resource destruction

This just makes sure we use the correct destruction path.

Reviewed-by: Elie Tournier <elie.tournier@collabora.com>
Tested-by: Jakob Bornecrantz <jakob@collabora.com>
Signed-off-by: Jakob Bornecrantz <jakob@collabora.com>

src/vrend_renderer.c

@@ -4779,11 +4779,7 @@ void vrend_renderer_resource_destroy(struct vrend_resource *res, bool remove)
    if (res->ptr)
       free(res->ptr);
    if (res->id) {
-      if (res->target == GL_ELEMENT_ARRAY_BUFFER_ARB ||
-          res->target == GL_ARRAY_BUFFER_ARB ||
-          res->target == GL_UNIFORM_BUFFER||
-          res->target == GL_TEXTURE_BUFFER||
-          res->target == GL_TRANSFORM_FEEDBACK_BUFFER) {
+      if (res->is_buffer) {
          glDeleteBuffers(1, &res->id);
          if (res->tbo_tex_id)
             glDeleteTextures(1, &res->tbo_tex_id);