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.

2 files changed, 6 insertions, 4 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(())
 }
diff --git a/src/meetup_rss.rs b/src/meetup_rss.rs
index b995571..7dd2b9e 100644
--- a/src/meetup_rss.rs
+++ b/src/meetup_rss.rs
@@ -1,4 +1,4 @@
-use rss::{Channel, ChannelBuilder, Item};
+use rss::{self, Channel, ChannelBuilder, Item};
 
 use std::io;
 
@@ -24,11 +24,13 @@ pub fn generate(events: &Vec<Event>) -> Result<Channel, String> {
 }
 
 /// Writes the channel to standard output.
-pub fn write(channel: Channel) {
+pub fn write(channel: Channel) -> Result<(), rss::Error> {
     let stdout = io::stdout();
     let handle = stdout.lock();
 
-    channel.write_to(handle);
+    channel.write_to(handle)?;
+
+    Ok(())
 }