[librsvg/rustification] Fix obsolete comment

[Federico Mena Quintero <federico src gnome org>]

commit 99342d530f9ff63debd3f64ef302a063dd119f29
Author: Federico Mena Quintero <federico gnome org>
Date:   Wed Dec 7 12:41:49 2016 -0600

    Fix obsolete comment

 rsvg-filter.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/rsvg-filter.c b/rsvg-filter.c
index 51a930e..02e7ee6 100644
--- a/rsvg-filter.c
+++ b/rsvg-filter.c
@@ -2607,7 +2607,7 @@ rsvg_filter_primitive_component_transfer_render (RsvgFilterPrimitive *
     boundarys = rsvg_filter_primitive_get_bounds (self, ctx);
 
     for (c = 0; c < 4; c++) {
-        char channel = "rgba"[c]; /* see rsvg_standard_element_start() for where these chars come from */
+        char channel = "rgba"[c]; /* see rsvg_new_node_component_transfer_function() for where these chars 
come from */
         for (i = 0; i < self->super.children->len; i++) {
             RsvgNode *child_node;