[librsvg/rustification] bbox.rs: Oops, return the correct dst.rect.height

[Federico Mena Quintero <federico src gnome org>]

commit 1516c9075efaa573618f56d3f5e370bda1aa6279
Author: Federico Mena Quintero <federico gnome org>
Date:   Wed Dec 7 12:41:25 2016 -0600

    bbox.rs: Oops, return the correct dst.rect.height

 rust/src/bbox.rs |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/rust/src/bbox.rs b/rust/src/bbox.rs
index a2ed3da..75a0e55 100644
--- a/rust/src/bbox.rs
+++ b/rust/src/bbox.rs
@@ -152,5 +152,5 @@ pub extern fn rsvg_bbox_clip (raw_dst: *mut RsvgBbox, raw_src: *const RsvgBbox)
     dst.rect.x = xmin;
     dst.rect.width = xmax - xmin;
     dst.rect.y = ymin;
-    dst.rect.y = ymax - ymin;
+    dst.rect.height = ymax - ymin;
 }