Fix cast pipeline issue in FastRThrowCompilerError

Author: steve-s

com.oracle.truffle.r.nodes.builtin/src/com/oracle/truffle/r/nodes/builtin/fastr/FastRThrowCompilerError.java

@@ -37,6 +37,10 @@
 public class FastRThrowCompilerError extends RBuiltinNode.Arg0 {
     private Random random = new Random();
 
+    static {
+        Casts.noCasts(FastRThrowCompilerError.class);
+    }
+
     @Override
     public Object execute(@SuppressWarnings("unused") VirtualFrame frame) {
         int value = getRandomValue();