Exit on youtube-dl error.

download-yt-feeds

@@ -3,6 +3,7 @@
 # Error codes:
 #   1 = Could not read file or directory.
 #   2 = Configuration option not set.
+#   3 = youtube-dl error.
 
 function die()
 {
@@ -64,6 +65,7 @@ function main()
             --format "${ytdl_format}" \
             ${=ytdl_extra_args} \
             "${feed}"
+        [[ ${?} -eq 0 ]] || die 3 "youtube-dl returned an error."
     done
     files_after="$(find "${download_dir}" -type f)"
     while read file; do