Fixed issue in the calculation of size of objectData

- Fixed issue in the calculation of size of objectData
- Indentation fixes

library/src/main/java/com/google/android/exoplayer/metadata/Id3Parser.java

@@ -100,9 +100,11 @@ public class Id3Parser implements MetadataParser<Map<String, Object>> {
         String description = new String(frame, descriptionStartIndex,
             descriptionEndIndex - descriptionStartIndex, charset);
 
-        byte[] objectData = new byte[frameSize - descriptionEndIndex - 2];
+        int objectDataSize = frameSize - 1 /* encoding byte */ - descriptionEndIndex -
+            delimiterLength(encoding);
+        byte[] objectData = new byte[objectDataSize];
         System.arraycopy(frame, descriptionEndIndex + delimiterLength(encoding), objectData, 0,
-                         frameSize - descriptionEndIndex - 2);
+            objectDataSize);
         metadata.put(GeobMetadata.TYPE, new GeobMetadata(mimeType, filename,
             description, objectData));
       } else {