[librsvg] Node::draw(): Don't draw nodes that are in error

[Federico Mena Quintero <federico src gnome org>]

commit 673b0f5b6390f25a9c6cd8cf572c93f13995abf5
Author: Federico Mena Quintero <federico gnome org>
Date:   Fri Mar 3 10:47:52 2017 -0600

    Node::draw(): Don't draw nodes that are in error

 rust/src/node.rs |    4 +++-
 1 files changed, 3 insertions(+), 1 deletions(-)
---
diff --git a/rust/src/node.rs b/rust/src/node.rs
index 31e6610..c577574 100644
--- a/rust/src/node.rs
+++ b/rust/src/node.rs
@@ -197,7 +197,9 @@ impl Node {
     }
 
     pub fn draw (&self, node: &RsvgNode, draw_ctx: *const RsvgDrawingCtx, dominate: i32) {
-        self.node_impl.draw (node, draw_ctx, dominate);
+        if self.result.borrow ().is_ok () {
+            self.node_impl.draw (node, draw_ctx, dominate);
+        }
     }
 
     pub fn get_c_impl (&self) -> *const RsvgCNodeImpl {