Parcelable: newArray() result type should be Object[] (KT-20717)

plugins/android-extensions/android-extensions-compiler/testData/parcel/box/kt20717.kt

@@ -0,0 +1,30 @@
+// WITH_RUNTIME
+
+@file:JvmName("TestKt")
+package test
+
+import kotlinx.android.parcel.*
+import android.os.Parcel
+import android.os.Parcelable
+
+fun box() = doTest { creator ->
+    assert(creator.newArray(5) != null)
+}
+
+fun doTest(work: (Parcelable.Creator<DummyParcelable>) -> Unit): String {
+    val dummy = DummyParcelable(42)
+
+    val clazz = dummy.javaClass
+    val field = clazz.getDeclaredField("CREATOR")
+    val creator = field.get(dummy) as Parcelable.Creator<DummyParcelable>
+
+    val parcel = Parcel.obtain()
+    dummy.writeToParcel(parcel, 0)
+    parcel.setDataPosition(0)
+
+    work(creator)
+    return "OK"
+}
+
+@Parcelize
+data class DummyParcelable(val int: Int): Parcelable