meetup_rss(write): Use the result from `Channel#write_to`

I didn't pay attention when I wrote this, but that method actually
returns a `Result`, so we need to use it.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/build_rss.rs b/src/build_rss.rs
index ab9d06d..f982b93 100644
--- a/src/build_rss.rs
+++ b/src/build_rss.rs
@@ -8,7 +8,7 @@ use meetup_rss;
 pub fn write_feed() -> Result<(), Box<Error>> {
     let events = event::find_upcoming_events()?;
     let channel = meetup_rss::generate(&events)?;
-    meetup_rss::write(channel);
+    meetup_rss::write(channel)?;
 
     Ok(())
 }