Unhook event before assigning to make sure no duplicate

0x7c13 · 0x7c13 · commit 96b39ec61795 · 2020-03-24T15:16:11.000-07:00
diff --git a/Microsoft.Toolkit.Uwp.UI.Controls/MarkdownTextBlock/MarkdownTextBlock.Methods.cs b/Microsoft.Toolkit.Uwp.UI.Controls/MarkdownTextBlock/MarkdownTextBlock.Methods.cs
@@ -184,10 +184,12 @@ private void HookListeners()
             {
                 if (link is Hyperlink hyperlink)
                 {
+                    hyperlink.Click -= Hyperlink_Click;
                     hyperlink.Click += Hyperlink_Click;
                 }
                 else if (link is Image image)
                 {
+                    image.Tapped -= NewImagelink_Tapped;
                     image.Tapped += NewImagelink_Tapped;
                 }
             }

Original file line number	Diff line number	Diff line change
`@@ -184,10 +184,12 @@ private void HookListeners()`
`184`	`184`	`{`
`185`	`185`	`if (link is Hyperlink hyperlink)`
`186`	`186`	`{`
	`187`	`+ hyperlink.Click -= Hyperlink_Click;`
`187`	`188`	`hyperlink.Click += Hyperlink_Click;`
`188`	`189`	`}`
`189`	`190`	`else if (link is Image image)`
`190`	`191`	`{`
	`192`	`+ image.Tapped -= NewImagelink_Tapped;`
`191`	`193`	`image.Tapped += NewImagelink_Tapped;`
`192`	`194`	`}`
`193`	`195`	`}`