404 error handling

VERSION

@@ -1 +1 @@
-0.4.5
+0.4.6

lib/models/music_brainz.rb

@@ -14,7 +14,7 @@ module MusicBrainz
         response = open(url, "User-Agent" => "gem musicbrainz (https://github.com/magnolia-fan/musicbrainz) @ " + Socket.gethostname)
         @@last_query_time = Time.now.to_f
       rescue => e
-        # MusicBrainz: 503
+        return nil if e.io.status[0].to_i == 404
       end
       break unless response.nil?
     end

lib/models/music_brainz/artist.rb

@@ -16,7 +16,9 @@ module MusicBrainz
     end
   
     def self.find mbid
-      @artist = self.parse_xml(Nokogiri::XML(MusicBrainz.load('http://musicbrainz.org/ws/2/artist/' + mbid)))
+      res = MusicBrainz.load('http://musicbrainz.org/ws/2/artist/' + mbid)
+      return nil if res.nil?
+      @artist = self.parse_xml(Nokogiri::XML())
     end
   
     def self.parse_xml xml