[gtk] gl renderer: Get blur node child only once

[Timm Bäder <baedert src gnome org>]

commit 4f5a9be4659da9c3fc7671307dd667e7bf18e96b
Author: Timm Bäder <mail baedert org>
Date:   Fri Oct 11 21:56:12 2019 +0200

    gl renderer: Get blur node child only once

 gsk/gl/gskglrenderer.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)
---
diff --git a/gsk/gl/gskglrenderer.c b/gsk/gl/gskglrenderer.c
index 8d36909c5a..e0e5420df1 100644
--- a/gsk/gl/gskglrenderer.c
+++ b/gsk/gl/gskglrenderer.c
@@ -1277,13 +1277,14 @@ render_blur_node (GskGLRenderer       *self,
   const float max_x = min_x + node->bounds.size.width;
   const float max_y = min_y + node->bounds.size.height;
   const float blur_radius = gsk_blur_node_get_radius (node);
+  GskRenderNode *child = gsk_blur_node_get_child (node);
   TextureRegion region;
   gboolean is_offscreen;
   RenderOp *op;
 
   if (blur_radius <= 0)
     {
-      gsk_gl_renderer_add_render_ops (self, gsk_blur_node_get_child (node), builder);
+      gsk_gl_renderer_add_render_ops (self, child, builder);
       return;
     }
 
@@ -1294,7 +1295,7 @@ render_blur_node (GskGLRenderer       *self,
 
   add_offscreen_ops (self, builder,
                      &node->bounds,
-                     gsk_blur_node_get_child (node),
+                     child,
                      &region, &is_offscreen,
                      RESET_CLIP | FORCE_OFFSCREEN | RESET_OPACITY);