Fixed possible NPE on exception handling

src/plugins/adufour/activecontours/ActiveContours.java

@@ -339,7 +339,7 @@ public class ActiveContours extends EzPlug implements EzStoppable, Block
 
     private final HashMap<TrackSegment, Double> volumes = new HashMap<TrackSegment, Double>();
     public final EzVarBoolean volume_constraint = new EzVarBoolean("Volume constraint", false);
-    public final EzVarDouble volume_weight = new EzVarDouble("Volume weight", 0.01, 0,1, 0.01);
+    public final EzVarDouble volume_weight = new EzVarDouble("Volume weight", 0.01, 0, 1, 0.01);
 
     public final EzButton showTrackManager;
 
@@ -615,7 +615,7 @@ public class ActiveContours extends EzPlug implements EzStoppable, Block
         for (int t = startT; t <= endT; t++)
         {
             int iteration;
-            
+
             // if sizeT changed during AC processing (i already did it to shorthen processing time :p)
             if (t >= inputData.getSizeT())
                 break;
@@ -1491,11 +1491,11 @@ public class ActiveContours extends EzPlug implements EzStoppable, Block
                             }
 
                             // we disabled volume constraint feature as it doesn't work and sometime end to crazy contour (Stephane)
-							// re-enabled volume constraint after taking into account both shrinking and growing contours instead of just growing ones(Daniel)
+                            // re-enabled volume constraint after taking into account both shrinking and growing contours instead of just growing ones(Daniel)
                             if (volume_constraint.getValue() && volumes.containsKey(segment))
-							{
-								contour.computeVolumeConstraint(volumes.get(segment), volume_weight.getValue());
-							}
+                            {
+                                contour.computeVolumeConstraint(volumes.get(segment), volume_weight.getValue());
+                            }
                         }
                         else
                         {
@@ -1514,7 +1514,7 @@ public class ActiveContours extends EzPlug implements EzStoppable, Block
             }
             catch (Exception e)
             {
-                throw new RuntimeException(e.getCause());
+                throw new RuntimeException((e.getCause() != null) ? e.getCause() : e);
             }
 
             if (coupling_flag.getValue())
@@ -1640,8 +1640,7 @@ public class ActiveContours extends EzPlug implements EzStoppable, Block
             }
             catch (Exception e)
             {
-                e.getCause().printStackTrace();
-                throw new RuntimeException(e);
+                throw new RuntimeException((e.getCause() != null) ? e.getCause() : e);
             }
         }
 
@@ -1675,8 +1674,7 @@ public class ActiveContours extends EzPlug implements EzStoppable, Block
                 }
                 catch (Exception e)
                 {
-                    e.getCause().printStackTrace();
-                    throw new RuntimeException(e);
+                    throw new RuntimeException((e.getCause() != null) ? e.getCause() : e);
                 }
             }
         }