TEST: with no parameters to vararg

backend.native/tests/build.gradle

@@ -1009,3 +1009,7 @@ task inline3(type: RunKonanTest) {
     goldValue = "5\n"
     source = "codegen/inline/inline3.kt"
 }
+
+task vararg0(type: RunKonanTest) {
+    source = "lower/vararg.kt"
+}

backend.native/tests/lower/vararg.kt

@@ -0,0 +1,6 @@
+fun foo(vararg x: Any?) {}
+fun bar() = foo()
+
+fun main(arg:Array<String>) {
+  bar()
+}