Don't attempt to run null P2 tasks

worldedit-bukkit/src/main/java/com/fastasyncworldedit/bukkit/regions/plotsquared/FaweDelegateRegionManager.java

@@ -73,9 +73,11 @@ public class FaweDelegateRegionManager {
                 } catch (MaxChangedBlocksException e) {
                     e.printStackTrace();
                 } finally {
+                    if (whenDone != null) {
                         TaskManager.IMP.task(whenDone);
                     }
                 }
+            }
         });
         return true;
     }
@@ -176,8 +178,10 @@ public class FaweDelegateRegionManager {
                         null,
                         RelightMode.valueOf(com.fastasyncworldedit.core.configuration.Settings.IMP.LIGHTING.MODE)
                 );
+                if (whenDone != null) {
                     TaskManager.IMP.task(whenDone);
                 }
+            }
         });
         return true;
     }
@@ -239,8 +243,10 @@ public class FaweDelegateRegionManager {
                         ), null,
                         RelightMode.valueOf(com.fastasyncworldedit.core.configuration.Settings.IMP.LIGHTING.MODE)
                 );
+                if (whenDone != null) {
                     TaskManager.IMP.task(whenDone);
                 }
+            }
         });
     }
 
@@ -266,8 +272,10 @@ public class FaweDelegateRegionManager {
                 } catch (MaxChangedBlocksException e) {
                     e.printStackTrace();
                 }
+                if (whenDone != null) {
                     TaskManager.IMP.task(whenDone);
                 }
+            }
         });
     }
 
@@ -317,7 +325,9 @@ public class FaweDelegateRegionManager {
                     e.printStackTrace();
                 }
             }
+            if (whenDone != null) {
                 TaskManager.IMP.task(whenDone);
+            }
         });
         return true;
     }
@@ -339,8 +349,10 @@ public class FaweDelegateRegionManager {
                     editSession.regenerate(region);
                     editSession.flushQueue();
                 }
+                if (whenDone != null) {
                     TaskManager.IMP.task(whenDone);
                 }
+            }
         });
         return true;
     }

worldedit-bukkit/src/main/java/com/fastasyncworldedit/bukkit/regions/plotsquared/FaweDelegateSchematicHandler.java

@@ -70,7 +70,9 @@ public class FaweDelegateSchematicHandler {
                 whenDone.value = false;
             }
             if (schematic == null) {
+                if (whenDone != null) {
                     TaskManager.runTask(whenDone);
+                }
                 return;
             }
             BlockVector3 dimension = schematic.getClipboard().getDimensions();
@@ -82,7 +84,9 @@ public class FaweDelegateSchematicHandler {
             if (((region.getMaximumPoint().getX() - region.getMinimumPoint().getX() + xOffset + 1) < WIDTH) || (
                     (region.getMaximumPoint().getZ() - region.getMinimumPoint().getZ() + zOffset + 1) < LENGTH) || (HEIGHT
                     > 256)) {
+                if (whenDone != null) {
                     TaskManager.runTask(whenDone);
+                }
                 return;
             }
             // Calculate the optimal height to paste the schematic at
@@ -121,9 +125,11 @@ public class FaweDelegateSchematicHandler {
                 clipboard.paste(editSession, to, true, false, true);
                 if (whenDone != null) {
                     whenDone.value = true;
+                    if (whenDone != null) {
                         TaskManager.runTask(whenDone);
                     }
                 }
+            }
         };
         if (Fawe.isMainThread()) {
             com.fastasyncworldedit.core.util.TaskManager.IMP.async(r);
@@ -175,7 +181,9 @@ public class FaweDelegateSchematicHandler {
     public void upload(final CompoundTag tag, final UUID uuid, final String file, final RunnableVal<URL> whenDone) {
         if (tag == null) {
             LOGGER.warn("Cannot save empty tag");
-            com.plotsquared.core.util.task.TaskManager.runTask(whenDone);
+            if (whenDone != null) {
+                TaskManager.runTask(whenDone);
+            }
             return;
         }
         final CompoundTag weTag = (CompoundTag) FaweCache.IMP.asTag(tag);