Bug 558906: [R-Help] Fix search for function name in AST/source code

Change-Id: Ifa5496b7d3a92e514b04669bacb5bdaa8deadd75
diff --git a/r/org.eclipse.statet.r.ui/src/org/eclipse/statet/internal/r/ui/rhelp/RHelpLtkUI.java b/r/org.eclipse.statet.r.ui/src/org/eclipse/statet/internal/r/ui/rhelp/RHelpLtkUI.java
index 268b274..4103bd8 100644
--- a/r/org.eclipse.statet.r.ui/src/org/eclipse/statet/internal/r/ui/rhelp/RHelpLtkUI.java
+++ b/r/org.eclipse.statet.r.ui/src/org/eclipse/statet/internal/r/ui/rhelp/RHelpLtkUI.java
@@ -124,10 +124,10 @@
 			if (checkInterrupted && Thread.currentThread().isInterrupted()) {
 				return null;
 			}
-			final List<Object> attachments= node.getAttachments();
+			final List<Object> attachments= node0.getAttachments();
 			for (final Object attachment : attachments) {
 				if (attachment instanceof RElementAccess) {
-					access= (RElementAccess) attachment;
+					access= (RElementAccess)attachment;
 					final IRFrame frame= access.getFrame();
 					if ((frame != null && frame.getFrameType() != IRFrame.FUNCTION)
 							|| (RElementName.isPackageFacetScopeType(access.getType())) ) {