method ref -> lambda: on arrays: resolve naming conflicts

(cherry picked from commit 91a8d6b875756fa2ca8a97afa9bf0cf7dec1a02c)

plugins/IntentionPowerPak/src/com/siyeh/ipp/types/ReplaceMethodRefWithLambdaIntention.java

@@ -122,7 +122,7 @@ public class ReplaceMethodRefWithLambdaIntention extends Intention {
             int dim = type.getArrayDimensions();
             buf.append(type.getDeepComponentType().getCanonicalText());
             buf.append("[");
-            buf.append(parameters[0].getName());
+            buf.append(map.get(parameters[0]));
             buf.append("]");
             while (--dim > 0) {
               buf.append("[]");

plugins/IntentionPowerPak/test/com/siyeh/ipp/types/methodRefs2lambda/ArrayConstructorRefUniqueParamName.java

@@ -0,0 +1,14 @@
+public class Foo {
+    public void test() {
+        Object i = null;
+        long[][] avg = collect(long[][]:<caret>:new);
+    }
+
+    interface P<T> {
+        T _(int i);
+    }
+
+    <T> T collect(P<T> h) {
+        return null;
+    }
+}

plugins/IntentionPowerPak/test/com/siyeh/ipp/types/methodRefs2lambda/ArrayConstructorRefUniqueParamName_after.java

@@ -0,0 +1,14 @@
+public class Foo {
+    public void test() {
+        Object i = null;
+        long[][] avg = collect((i1) -> new long[i1][]);
+    }
+
+    interface P<T> {
+        T _(int i);
+    }
+
+    <T> T collect(P<T> h) {
+        return null;
+    }
+}

plugins/IntentionPowerPak/testSrc/com/siyeh/ipp/types/ReplaceMethodReferenceWithLambdaIntentionTest.java

@@ -101,4 +101,8 @@ public class ReplaceMethodReferenceWithLambdaIntentionTest extends IPPTestCase {
   public void testArrayMethodRef() throws Exception {
     doTest();
   }
+
+  public void testArrayConstructorRefUniqueParamName() throws Exception {
+    doTest();
+  }
 }