Removed superfluous call to 'onCreate' in RCallNode

com.oracle.truffle.r.nodes/src/com/oracle/truffle/r/nodes/function/RCallNode.java

@@ -357,7 +357,6 @@ public abstract class RCallNode extends RNode {
             RootCallNode next = createNextNode();
             RootCallNode cachedNode = new CachedCallNode(this.functionNode, current, next, function);
             next.onCreate();
-            current.onCreate();
             this.replace(cachedNode);
             return cachedNode;
         }
@@ -405,6 +404,7 @@ public abstract class RCallNode extends RNode {
                     MatchedArguments matchedArgs = ArgumentMatcher.matchArguments(frame, function, clonedArgs, callSrc, argsSrc);
                     callNode = new DispatchedCallNode(function, matchedArgs);
                 }
+                callNode.onCreate();
             }
 
             callNode.assignSourceSection(callSrc);