[librsvg: 1/2] Fix distcheck

[Jordan Petridis <jpetridis src gnome org>]

commit 560351a66a420fa45e1fbbf97d70ed68ee16c25b
Author: Ivan Molodetskikh <yalterz gmail com>
Date:   Sun Jul 22 20:59:29 2018 +0300

    Fix distcheck

 Makefile.am | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
---
diff --git a/Makefile.am b/Makefile.am
index bf15f8e8..cea38118 100644
--- a/Makefile.am
+++ b/Makefile.am
@@ -125,7 +125,9 @@ RUST_SRC =                                                  \
 
 RUST_EXTRA =                                   \
        Cargo.lock                              \
-       cargo-vendor-config
+       cargo-vendor-config                     \
+       rsvg_internals/benches/box_blur.rs      \
+       rsvg_internals/benches/pixel_iterators.rs
 
 if DEBUG_RELEASE
 CARGO_RELEASE_ARGS=