StreamingChangesResult's Iterator may give NPE
corrected spacing
Revert 350e6d2..2fc2736

This rolls back to commit 350e6d2ad5b4949c507a1dbe4b2284d63793aaf5.
Revert 2fc2736..e04152d

This rolls back to commit 2fc2736eb1fab2c8063fc8a9905ac5ee5d2285ee.