[librsvg: 13/14] emit_marker_by_name(): Don't copy the incoming string

[Federico Mena Quintero <federico src gnome org>]

commit d6cff8bdcf41b5f1448582cc1824bbc24fb84db4
Author: Federico Mena Quintero <federico gnome org>
Date:   Wed Jan 24 12:30:24 2018 -0600

    emit_marker_by_name(): Don't copy the incoming string

 rust/src/marker.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
---
diff --git a/rust/src/marker.rs b/rust/src/marker.rs
index 7a1e1b4..908fc14 100644
--- a/rust/src/marker.rs
+++ b/rust/src/marker.rs
@@ -567,7 +567,7 @@ fn emit_marker_by_name (draw_ctx:       *const RsvgDrawingCtx,
         return;
     }
 
-    let name = unsafe { String::from_glib_none (marker_name) };
+    let name = unsafe { utf8_cstr(marker_name) };
 
     let c_node = drawing_ctx::acquire_node_of_type (draw_ctx, &name, NodeType::Marker);