Clipper: clear DisplayStart/DisplayEnd fields when Step() returns false.

docs/CHANGELOG.txt

@@ -43,6 +43,8 @@ Breaking Changes:
 
 Other Changes:
 
+- Clipper: clear DisplayStart/DisplayEnd fields when Step() returns false.
+
 
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  VERSION 1.92.6 (2026-02-17)

imgui.cpp

@@ -3289,6 +3289,7 @@ void ImGuiListClipper::End()
         }
         TempData = NULL;
     }
+    DisplayStart = DisplayEnd = ItemsCount; // Clear this so code which may be reused past last Step() won't trip on a non-empty range.
     ItemsCount = -1;
 }