Generify getAdapter methods/calls.

Change-Id: I66b7b425e7910a690e1fc500bfc3be92b1b46d68
Signed-off-by: Alexander Kurtakov <akurtako@redhat.com>
diff --git a/plugins/org.eclipse.dltk.ruby.ui/src/org/eclipse/dltk/ruby/internal/ui/text/hyperlink/RubyRequireHyperlinkDetector.java b/plugins/org.eclipse.dltk.ruby.ui/src/org/eclipse/dltk/ruby/internal/ui/text/hyperlink/RubyRequireHyperlinkDetector.java
index fe8469d..d617f23 100644
--- a/plugins/org.eclipse.dltk.ruby.ui/src/org/eclipse/dltk/ruby/internal/ui/text/hyperlink/RubyRequireHyperlinkDetector.java
+++ b/plugins/org.eclipse.dltk.ruby.ui/src/org/eclipse/dltk/ruby/internal/ui/text/hyperlink/RubyRequireHyperlinkDetector.java
@@ -1,5 +1,5 @@
 /*******************************************************************************
- * Copyright (c) 2008, 2016 xored software, Inc. and others.
+ * Copyright (c) 2008, 2017 xored software, Inc. and others.
  *
  * All rights reserved. This program and the accompanying materials
  * are made available under the terms of the Eclipse Public License v1.0
@@ -115,7 +115,7 @@
 	 */
 	protected IHyperlink createLink(int offset, final String line, int begin,
 			int end) {
-		final ITextEditor editor = (ITextEditor) getAdapter(ITextEditor.class);
+		final ITextEditor editor = getAdapter(ITextEditor.class);
 		if (editor != null) {
 			final String requiredFile = line.substring(begin, end);
 			final Region region = new Region(offset + begin, end - begin);