Fixed W504

Author: slogsdon7

test/test_mediafile_edge.py

@@ -409,8 +409,8 @@ def setUp(self):
         self.key = "READ_ONLY_TEST"
         self.field = mediafile.MediaField(
             mediafile.MP3StorageStyle(self.key, read_only=True),
-            mediafile.MP4StorageStyle("----:com.apple.iTunes:" +
-                                      self.key, read_only=True),
+            mediafile.MP4StorageStyle(
+                "----:com.apple.iTunes:" + self.key, read_only=True),
             mediafile.StorageStyle(self.key, read_only=True),
             mediafile.ASFStorageStyle(self.key, read_only=True),
         )