[librsvg/rustification] marker.rs: Combine 'derive' attributes into a single one

[Federico Mena Quintero <federico src gnome org>]

commit 1d39ddd4ae89041c2512d8adf0528f9a7afb6fd7
Author: Federico Mena Quintero <federico gnome org>
Date:   Mon Oct 31 21:22:08 2016 -0600

    marker.rs: Combine 'derive' attributes into a single one

 rust/src/marker.rs |    3 +--
 1 files changed, 1 insertions(+), 2 deletions(-)
---
diff --git a/rust/src/marker.rs b/rust/src/marker.rs
index e40d2c8..5004e10 100644
--- a/rust/src/marker.rs
+++ b/rust/src/marker.rs
@@ -1,8 +1,7 @@
 extern crate libc;
 extern crate cairo;
 
-#[derive(Debug)]
-#[derive(PartialEq)]
+#[derive(Debug, PartialEq)]
 pub enum Segment {
     Degenerate {            // A single lone point
         x: f64,