fix error thrown in checking cache key when key is null

taooceros · taooceros · commit 653dc83bd088 · 2021-08-08T13:45:18.000+08:00
diff --git a/Flow.Launcher.Infrastructure/Image/ImageCache.cs b/Flow.Launcher.Infrastructure/Image/ImageCache.cs
@@ -84,7 +84,7 @@ async void SliceExtra()
 
         public bool ContainsKey(string key)
         {
-            return Data.ContainsKey(key) && Data[key].imageSource != null;
+            return key is not null && Data.ContainsKey(key) && Data[key].imageSource != null;
         }
 
         public int CacheSize()

Original file line number	Diff line number	Diff line change
`@@ -84,7 +84,7 @@ async void SliceExtra()`
`84`	`84`
`85`	`85`	`public bool ContainsKey(string key)`
`86`	`86`	`{`
`87`		`- return Data.ContainsKey(key) && Data[key].imageSource != null;`
	`87`	`+ return key is not null && Data.ContainsKey(key) && Data[key].imageSource != null;`
`88`	`88`	`}`
`89`	`89`
`90`	`90`	`public int CacheSize()`