ImageCache.Dispose(bool)でNullReferenceExceptionが起こる問題を修正

diff --git a/OpenTween/ImageCache.cs b/OpenTween/ImageCache.cs
index cb2a3cf..5462a81 100644 (file)
--- a/OpenTween/ImageCache.cs
+++ b/OpenTween/ImageCache.cs
@@ -170,7 +170,7 @@ namespace OpenTween
                     foreach (var item in this.innerDictionary)
                     {
                         var task = item.Value;
-                        if (task.Status == TaskStatus.RanToCompletion)
+                        if (task.Status == TaskStatus.RanToCompletion && task.Result != null)
                             task.Result.Dispose();
                     }