don't throw exceptions when completing in the RHS of >>, complete instead

java/java-tests/testData/codeInsight/completion/normal/RightShift.java

@@ -0,0 +1,8 @@
+public class SomeClass {
+  Object myField1;
+  Object myField2;
+
+  void foo(int param) {
+    int a = param >> my<caret>
+  }
+}

java/java-tests/testSrc/com/intellij/codeInsight/completion/NormalCompletionTest.java

@@ -645,5 +645,10 @@ public class NormalCompletionTest extends LightCompletionTestCase {
 
   public void testPrimitiveMethodParameter() throws Throwable { doTest(); }
 
+  public void testRightShift() throws Throwable {
+    configureByFile("/codeInsight/completion/normal/" + getTestName(false) + ".java");
+    assertStringItems("myField1", "myField2");
+  }
+
 
 }