KT-2280 Recursive function declared in function results in VerifyError

#KT-2280 Fixed

A closure's constructor should not take an instance of itself as an
argument, because it would require caller to pass yet uninitialized
value. Instead it should initialize a corresponding field with 'this'

compiler/testData/codegen/regressions/kt2280.kt

@@ -0,0 +1,7 @@
+fun box(): String {
+    fun rmrf(i: Int) {
+        if (i > 0) rmrf(i - 1)
+    }
+    rmrf(5)
+    return "OK"
+}