Handle null case in equality checking BlockVector3+DFSNode

worldedit-core/src/main/java/com/boydti/fawe/object/brush/SplineBrush.java

@@ -59,7 +59,7 @@ public class SplineBrush implements Brush, ResettableTool {
             return;
         }
         int originalSize = numSplines;
-        boolean newPos = this.position == null || !position.equals(this.position);
+        boolean newPos = !position.equals(this.position);
         this.position = position;
         if (newPos) {
             if (positionSets.size() >= MAX_POINTS) {

worldedit-core/src/main/java/com/boydti/fawe/object/brush/sweep/SweepBrush.java

@@ -46,7 +46,7 @@ public class SweepBrush implements Brush, ResettableTool {
             return;
         }
 
-        boolean newPos = this.position == null || !position.equals(this.position);
+        boolean newPos = !position.equals(this.position);
         this.position = position;
         Player player = editSession.getPlayer();
         if (player == null) {

worldedit-core/src/main/java/com/boydti/fawe/object/visitor/DFSVisitor.java

@@ -104,7 +104,7 @@ public abstract class DFSVisitor implements Operation {
                         from.getZ() + direction.getZ());
                 if (isVisitable(bv, bv2)) {
                     Node adjacent = new Node(bv2.getBlockX(), bv2.getBlockY(), bv2.getBlockZ());
-                    if (current.from == null || !adjacent.equals(current.from)) {
+                    if (!adjacent.equals(current.from)) {
                         AtomicInteger adjacentCount = visited.get(adjacent);
                         if (adjacentCount == null) {
                             if (countAdd++ < maxBranch) {
@@ -200,6 +200,10 @@ public abstract class DFSVisitor implements Operation {
 
         @Override
         public boolean equals(Object obj) {
+            if (obj == null) {
+                return false;
+            }
+
             Node other = (Node) obj;
             return other.x == x && other.z == z && other.y == y;
         }

worldedit-core/src/main/java/com/sk89q/worldedit/math/BlockVector3.java

@@ -775,6 +775,10 @@ public abstract class BlockVector3 {
     }
 
     public final boolean equals(BlockVector3 other) {
+        if (other == null) {
+            return false;
+        }
+        
         return other.getX() == this.getX() && other.getY() == this.getY() && other.getZ() == this.getZ();
     }
 

worldedit-core/src/main/java/com/sk89q/worldedit/regions/selector/CuboidRegionSelector.java

@@ -128,7 +128,7 @@ public class CuboidRegionSelector implements RegionSelector, CUIRegion {
     public boolean selectPrimary(BlockVector3 position, SelectorLimits limits) {
         checkNotNull(position);
 
-        if (position1 != null && position.equals(position1)) {
+        if (position.equals(position1)) {
             return false;
         }
 
@@ -141,7 +141,7 @@ public class CuboidRegionSelector implements RegionSelector, CUIRegion {
     public boolean selectSecondary(BlockVector3 position, SelectorLimits limits) {
         checkNotNull(position);
 
-        if (position2 != null && position.equals(position2)) {
+        if (position.equals(position2)) {
             return false;
         }
 

worldedit-core/src/main/java/com/sk89q/worldedit/regions/selector/ExtendingCuboidRegionSelector.java

@@ -87,7 +87,7 @@ public class ExtendingCuboidRegionSelector extends CuboidRegionSelector {
 
     @Override
     public boolean selectPrimary(BlockVector3 position, SelectorLimits limits) {
-        if (position1 != null && position2 != null && position.equals(position1) && position.equals(position2)) {
+        if (position.equals(position1) && position.equals(position2)) {
             return false;
         }