Backport PR #22907: Fix quad mesh cursor data

QuLogic · meeseeksmachine · commit f5cca25842bc · 2022-04-30T00:07:46.000Z
diff --git a/lib/matplotlib/collections.py b/lib/matplotlib/collections.py
@@ -2213,6 +2213,7 @@ def get_cursor_data(self, event):
         contained, info = self.contains(event)
         if len(info["ind"]) == 1:
             ind, = info["ind"]
-            return self.get_array()[ind]
+            array = self.get_array()
+            return array[ind] if array else None
         else:
             return None
