[vtkusers] bugs in vtkImageReslice.cxx and vtkImageCacheFilter.cxx

[hhiraki at lab.nig.ac.jp]

Dear developers,

This is a bug report. Two simple bugs may cause a memory leak in 
vtkImageReslice (when used with InformationInput) and a segfault 
in vtkImageCacheFilter (when the source was modified). My patch 
shown below is for a version about 5 months ago. 

Regards,

Hideaki Hiraki

--- vtkImageReslice.cxx~	Mon Sep 30 23:02:48 2002
+++ vtkImageReslice.cxx	Thu Feb 27 15:28:03 2003
@@ -97,6 +97,7 @@
 //----------------------------------------------------------------------------
 vtkImageReslice::~vtkImageReslice()
 {
+  this->SetInformationInput(NULL);
   this->SetResliceTransform(NULL);
   this->SetResliceAxes(NULL);
   if (this->IndexMatrix)

--- vtkImageCacheFilter.cxx~	Mon Sep 30 23:02:47 2002
+++ vtkImageCacheFilter.cxx	Thu Feb 27 15:17:05 2003
@@ -135,6 +135,7 @@
     if (this->Data[i] && this->Times[i] < pmt)
       {
       this->Data[i]->Delete();
+      this->Data[i] = NULL;
       this->Times[i] = 0;
       }
     }