Fix syntax error

Signed-off-by: AnErrupTion <anerruption@disroot.org>

Author: AnErrupTion

lib/pages/editor/editor.dart

@@ -666,7 +666,7 @@ class EditorState extends State<Editor> {
       } else if (currentTool is Eraser) {
       	page.eraserPosition = null;
         final erased = (currentTool as Eraser).onDragEnd();
-        if (stylusButtonPressed || stows.disableEraserAfterUse.value)) {
+        if (stylusButtonPressed || stows.disableEraserAfterUse.value) {
           // restore previous tool
           stylusButtonPressed = false;
           currentTool = tmpTool!;