fix RemoveOldQueryResults NullPointerException (#1204)

taooceros · web-flow · commit 886eb8650d9d · 2022-07-21T20:12:24.000+10:00
diff --git a/Flow.Launcher/ViewModel/MainViewModel.cs b/Flow.Launcher/ViewModel/MainViewModel.cs
@@ -664,7 +664,7 @@ async Task QueryTask(PluginPair plugin)
 
         private void RemoveOldQueryResults(Query query)
         {
-            if (_lastQuery.ActionKeyword != query.ActionKeyword)
+            if (_lastQuery?.ActionKeyword != query?.ActionKeyword)
             {
                 Results.Clear();
             }

Original file line number	Diff line number	Diff line change
`@@ -664,7 +664,7 @@ async Task QueryTask(PluginPair plugin)`
`664`	`664`
`665`	`665`	`private void RemoveOldQueryResults(Query query)`
`666`	`666`	`{`
`667`		`- if (_lastQuery.ActionKeyword != query.ActionKeyword)`
	`667`	`+ if (_lastQuery?.ActionKeyword != query?.ActionKeyword)`
`668`	`668`	`{`
`669`	`669`	`Results.Clear();`
`670`	`670`	`}`