[K/N] Fix infinite loop in ObjCExportScope

Merge-request: KT-MR-8024
Merged-by: Gleb Lukianets <Gleb.Lukianets@jetbrains.com>

kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/objcexport/ObjCExportScope.kt

@@ -30,7 +30,7 @@ internal inline fun <reified T : ObjCExportScope> ObjCExportScope.nearestScopeOf
         if (parent is T) {
             return parent
         }
-        parent = this.parent
+        parent = parent.parent
     }
     return null
 }