Move null check in tool code one level out. This means it will guard against trying to use worldedit for querying double chests when worldedit is not loaded. Fixes #511

Long-term, perhaps rather than using a worldedit object directly, we should use our own interface which supports similar methods and have two implementations, one which uses a worldedit selection and one which takes two corner coordinates for use in double chests.  That might also allow for custom queries along those lines.

src/main/java/de/diddiz/LogBlock/listeners/ToolListener.java

@@ -70,9 +70,9 @@ public class ToolListener implements Listener
 											block.getLocation(), block.getRelative(face).getLocation()));
 								}
 							}
-							if (params.sel == null) {
-								params.setLocation(block.getLocation());
-							}
+						}
+						if (params.sel == null) {
+							params.setLocation(block.getLocation());
 						}
 					}
 					try {