only close clipboard on error during copy

apply to //cut as well

worldedit-core/src/main/java/com/sk89q/worldedit/command/ClipboardCommands.java

@@ -139,8 +139,8 @@ public class ClipboardCommands {
         }
         session.setClipboard(null);
 
-        try (Clipboard clipboard = new BlockArrayClipboard(region, actor.getUniqueId())) {
-
+        Clipboard clipboard = new BlockArrayClipboard(region, actor.getUniqueId());
+        try {
             clipboard.setOrigin(centerClipboard ? region.getCenter().toBlockPoint() : session.getPlacementPosition(actor));
             ForwardExtentCopy copy = new ForwardExtentCopy(editSession, region, clipboard, region.getMinimumPoint());
             copy.setCopyingEntities(copyEntities);
@@ -170,6 +170,9 @@ public class ClipboardCommands {
             session.setClipboard(new ClipboardHolder(clipboard));
 
             copy.getStatusMessages().forEach(actor::print);
+        } catch (Throwable e) {
+            clipboard.close();
+            throw e;
         }
         //FAWE end
     }
@@ -274,6 +277,7 @@ public class ClipboardCommands {
         session.setClipboard(null);
 
         BlockArrayClipboard clipboard = new BlockArrayClipboard(region, actor.getUniqueId());
+        try {
             clipboard.setOrigin(session.getPlacementPosition(actor));
             ForwardExtentCopy copy = new ForwardExtentCopy(editSession, region, clipboard, region.getMinimumPoint());
             copy.setSourceFunction(new BlockReplace(editSession, leavePattern));
@@ -306,6 +310,10 @@ public class ClipboardCommands {
                 actor.print(Caption.of("fawe.tips.tip.lazycut"));
             }
             copy.getStatusMessages().forEach(actor::print);
+        } catch (Throwable e) {
+            clipboard.close();
+            throw e;
+        }
         //FAWE end
     }