Remove redundant null check

InstanceOf already returns false for null.

Change-Id: Idf5a99252c8b19f08dbda08a1cf16d61d7d56934
Reviewed-on: https://git.eclipse.org/r/c/platform/eclipse.platform.text/+/187489
Tested-by: Alexander Kurtakov <akurtako@redhat.com>
Reviewed-by: Alexander Kurtakov <akurtako@redhat.com>
diff --git a/org.eclipse.ui.workbench.texteditor/src/org/eclipse/ui/texteditor/AbstractTextEditor.java b/org.eclipse.ui.workbench.texteditor/src/org/eclipse/ui/texteditor/AbstractTextEditor.java
index a245cff..b8a57d3 100644
--- a/org.eclipse.ui.workbench.texteditor/src/org/eclipse/ui/texteditor/AbstractTextEditor.java
+++ b/org.eclipse.ui.workbench.texteditor/src/org/eclipse/ui/texteditor/AbstractTextEditor.java
@@ -3959,7 +3959,7 @@
 			Color color= createColor(store, PREFERENCE_COLOR_FIND_SCOPE, styledText.getDisplay());
 
 			IFindReplaceTarget target= viewer.getFindReplaceTarget();
-			if (target != null && target instanceof IFindReplaceTargetExtension)
+			if (target instanceof IFindReplaceTargetExtension)
 				((IFindReplaceTargetExtension) target).setScopeHighlightColor(color);
 
 		}