[Kst] branches/kst/1.3/kst/src/libkstmath

[George Staikos]

SVN commit 596055 by staikos:

don't crash on unparsable equations


 M  +1 -1      kstequation.cpp  


--- branches/kst/1.3/kst/src/libkstmath/kstequation.cpp #596054:596055
@@ -211,7 +211,7 @@
   Equation::Context ctx;
   ctx.sampleCount = _ns;
   ctx.xVector = v;
-  usedUpdated = KstObject::UPDATE == _pe->update(update_counter, &ctx);
+  usedUpdated = _pe && KstObject::UPDATE == _pe->update(update_counter, &ctx);
 
   KstObject::UpdateType rc = NO_CHANGE; // if force, rc = UPDATE anyway.
   if (force || xUpdated || usedUpdated) {