fixed lambda parameter names already used in the context

testData/src/pkg/TestLambdaParams.java

@@ -0,0 +1,28 @@
+/*
+ * Copyright 2000-2014 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+package pkg;
+
+import java.util.function.BinaryOperator;
+import java.util.function.Function;
+
+public class TestLambdaParams {
+  public static void toCollection(Object collectionFactory) {
+    Class a = null;
+    Function f = r1 -> collectionFactory;
+    Function f1 = r1 -> a;
+    Function f2 = r1 -> r1;
+  }
+}