[Kst] extragear/graphics/kst/src/libkstmath

[George Staikos]

SVN commit 596059 by staikos:

the other half of the fix for invalid equations crashing Kst.  Sometimes we
accessed deleted memory.


 M  +1 -0      kstequation.cpp  


--- trunk/extragear/graphics/kst/src/libkstmath/kstequation.cpp #596058:596059
@@ -305,6 +305,7 @@
       }
       delete (Equation::Node*)ParsedEquation;
       ParsedEquation = 0L;
+      _pe = 0L;
       Equation::mutex().unlock();
     }
   }