Fix missing dealloc hooks on object freed by cycle collector. (#1487)

backend.native/tests/build.gradle

@@ -2081,6 +2081,11 @@ task memory_weak0(type: RunKonanTest) {
     source = "runtime/memory/weak0.kt"
 }
 
+task memory_weak1(type: RunKonanTest) {
+    goldValue = "OK\n"
+    source = "runtime/memory/weak1.kt"
+}
+
 task mpp1(type: RunStandaloneKonanTest) {
     source = "codegen/mpp/mpp1.kt"
     flags = ['-tr', '-Xmulti-platform']

backend.native/tests/interop/objc/smoke.kt

@@ -50,7 +50,7 @@ fun run() {
     // hashCode (directly):
     if (foo.hashCode() == foo.hash().let { it.toInt() xor (it shr 32).toInt() }) {
         // toString (virtually):
-        println(listOf(foo, pair).map { it.toString() }.min() == foo.description())
+        println(map.keys.map { it.toString() }.min() == foo.description())
     }
 
     println(globalString)

backend.native/tests/runtime/memory/weak1.kt

@@ -0,0 +1,15 @@
+package runtime.memory.weak1
+
+import kotlin.test.*
+import konan.ref.*
+
+class Node(var next: Node?)
+
+@Test fun runTest() {
+    val node1 = Node(null)
+    val node2 = Node(node1)
+    node1.next = node2
+
+    konan.ref.WeakReference(node1)
+    println("OK")
+}