tools: cleanup

tools/level_editor/project.vala

@@ -551,18 +551,12 @@ public class Project
 		_importers.add(data);
 		_importers.sort((a, b) => { return a.order < b.order ? -1 : 1; });
 
-		//check for an remove duplicates
-		
-		foreach (string ext in data.extensions){
-			if (_all_extensions_importer_data.extensions.contains(ext)){
-				//it's a duplicate, don't add it
-			}
-			else {
+		// Skip duplicated extensions.
+		foreach (string ext in data.extensions) {
+			if (!_all_extensions_importer_data.extensions.contains(ext))
 				_all_extensions_importer_data.extensions.add(ext);
-			}
 		}
 
-		
 		_all_extensions_importer_data._filter = create_gtk_file_filter("All", _all_extensions_importer_data.extensions);
 	}