final cleanup of RCallNode.getSyntaxLHS/HiddenInternalFunctions

com.oracle.truffle.r.nodes.builtin/src/com/oracle/truffle/r/nodes/builtin/base/HiddenInternalFunctions.java

@@ -37,7 +37,6 @@ import com.oracle.truffle.r.nodes.builtin.RBuiltinNode;
 import com.oracle.truffle.r.nodes.builtin.base.EvalFunctions.Eval;
 import com.oracle.truffle.r.nodes.function.PromiseHelperNode;
 import com.oracle.truffle.r.nodes.function.RCallNode;
-import com.oracle.truffle.r.nodes.function.RCallerHelper;
 import com.oracle.truffle.r.nodes.function.SubstituteVirtualFrame;
 import com.oracle.truffle.r.nodes.unary.CastIntegerNode;
 import com.oracle.truffle.r.nodes.unary.CastIntegerNodeGen;
@@ -69,7 +68,6 @@ import com.oracle.truffle.r.runtime.data.model.RAbstractStringVector;
 import com.oracle.truffle.r.runtime.env.REnvironment;
 import com.oracle.truffle.r.runtime.env.REnvironment.PutException;
 import com.oracle.truffle.r.runtime.ffi.DLL;
-import com.oracle.truffle.r.runtime.nodes.RSyntaxNode;
 
 /**
  * Private, undocumented, {@code .Internal} and {@code .Primitive} functions transcribed from GnuR,

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

@@ -1010,8 +1010,7 @@ public abstract class RCallNode extends RNode implements RSyntaxNode, RSyntaxCal
     @Override
     public RSyntaxElement getSyntaxLHS() {
         ForcePromiseNode func = getFunction();
-        RNode functionNode = getFunctionNode();
-        return func == null || func.getValueNode() == null ? RSyntaxLookup.createDummyLookup(RSyntaxNode.LAZY_DEPARSE, "FUN", true) : functionNode.asRSyntaxNode();
+        return func == null || func.getValueNode() == null ? RSyntaxLookup.createDummyLookup(RSyntaxNode.LAZY_DEPARSE, "FUN", true) : getFunctionNode().asRSyntaxNode();
     }
 
     @Override