BytesReference usage to properly work when hasArray is not available

fix spelling in comment, + remove overcautious assert

src/main/java/org/elasticsearch/index/mapper/internal/SourceFieldMapper.java

@@ -344,7 +344,6 @@ public class SourceFieldMapper extends AbstractFieldMapper<byte[]> implements In
         if (!source.hasArray()) {
             source = source.toBytesArray();
         }
-        assert source.hasArray();
         fields.add(new StoredField(names().indexName(), source.array(), source.arrayOffset(), source.length()));
     }
 

src/main/java/org/elasticsearch/index/translog/fs/FsTranslog.java

@@ -350,7 +350,7 @@ public class FsTranslog extends AbstractIndexShardComponent implements Translog
             out.seek(size);
 
             BytesReference ref = out.bytes();
-            // TODO: pass teh BytesReference to the FsTranslogFile and have them optimize writing
+            // TODO: pass the BytesReference to the FsTranslogFile and have them optimize writing
             if (!ref.hasArray()) {
                 ref = ref.toBytesArray();
             }