Segfault when applying filter without active source
This issue was created automatically from an original Mantis Issue. Further discussion may take place here.
Since 3.14.0 (and till git/master as of today) it is possible to apply a filter if no source is active. This results in a segfault.
Sources - Wavelet - Apply Click anywhere in the pipeline browser to unselect the wavelet source Filters - Calculator
=> segfault in pqOutputPort.h:68
pqPipelineSource* getSource() const { return this->Source; }
because 'this' is a NULL pointer.
In PV 3.12.0 it was instead not possible to apply a filter without an active source, so that version is unaffected.