Only access renderObject if hasSize is true (#2263)

Author: denrase

CHANGELOG.md

@@ -38,6 +38,10 @@
   - [changelog](https://github.com/getsentry/sentry-cocoa/blob/main/CHANGELOG.md#8360)
   - [diff](https://github.com/getsentry/sentry-cocoa/compare/8.35.1...8.36.0)
 
+### Fixes
+
+- Only access renderObject if `hasSize` is true ([#2263](https://github.com/getsentry/sentry-dart/pull/2263))
+
 ## 8.8.0
 
 ### Features

flutter/lib/src/view_hierarchy/sentry_tree_walker.dart

@@ -255,7 +255,7 @@ class _TreeWalker {
     double? alpha;
 
     final renderObject = element.renderObject;
-    if (renderObject is RenderBox) {
+    if (renderObject is RenderBox && renderObject.hasSize) {
       final offset = renderObject.localToGlobal(Offset.zero);
       if (offset.dx > 0) {
         x = offset.dx;