[Ide] Fixed possible null reference exception. (#9003)

mkrueger · Therzok · commit a46255ba5ec2 · 2019-10-22T13:49:41.000+03:00
Fixes VSTS #1005254 - File content isn't displayed after opening
diff --git a/main/src/core/MonoDevelop.Ide/MonoDevelop.Components/Tabstrip.cs b/main/src/core/MonoDevelop.Ide/MonoDevelop.Components/Tabstrip.cs
@@ -489,7 +489,7 @@ public bool Active {
 
 		void UpdateAccessibility ()
 		{
-			Accessible.SetRole (AtkCocoa.Roles.AXRadioButton, active ? "active tab" : "tab");
+			Accessible?.SetRole (AtkCocoa.Roles.AXRadioButton, active ? "active tab" : "tab");
 		}
 
 		public bool IsSeparator {

Original file line number	Diff line number	Diff line change
`@@ -489,7 +489,7 @@ public bool Active {`
`489`	`489`
`490`	`490`	`void UpdateAccessibility ()`
`491`	`491`	`{`
`492`		`- Accessible.SetRole (AtkCocoa.Roles.AXRadioButton, active ? "active tab" : "tab");`
	`492`	`+ Accessible?.SetRole (AtkCocoa.Roles.AXRadioButton, active ? "active tab" : "tab");`
`493`	`493`	`}`
`494`	`494`
`495`	`495`	`public bool IsSeparator {`