[Jts-topo-suite-user] NullPointerException when calling STRtree.remove

[Felix O. <obe@IVV-AACHEN.DE>]

Hello, 

a user of NTS reported an issue when calling STRtree.Remove
(https://github.com/NetTopologySuite/NetTopologySuite/issues/31)

Investigating the issue, it showed that JTS also has an issue when calling that method, it throws a NullPointerException.

Please see attached unit test and fix.

Felix Obermaier