ParaView crashes when threshold produces no data

This issue was created automatically from an original Mantis Issue. Further discussion may take place here.

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In my most recent pull of master, ParaView is crashing when threshold returns an empty data set. This problem is not present in the last release of ParaView (4.1.0). To replicate:

1. Create a wavelet source. Apply.
2. Create a threshold filter. Min 38, Max 40. Apply.

Crash.