Fix warnings in K/Native code

kotlin-native/Interop/Indexer/src/main/kotlin/org/jetbrains/kotlin/native/interop/indexer/NativeIndex.kt

@@ -175,6 +175,8 @@ abstract class StructDef(val size: Long, val align: Int) {
                 when (it) {
                     is Field -> add(it)
                     is AnonymousInnerRecord -> addAll(it.def.fields)
+                    is BitField,
+                    is IncompleteField -> {}
                 }
             }
         }
@@ -185,6 +187,8 @@ abstract class StructDef(val size: Long, val align: Int) {
                 when (it) {
                     is BitField -> add(it)
                     is AnonymousInnerRecord -> addAll(it.def.bitFields)
+                    is Field,
+                    is IncompleteField -> {}
                 }
             }
         }

kotlin-native/Interop/Indexer/src/main/kotlin/org/jetbrains/kotlin/native/interop/indexer/Utils.kt

@@ -241,6 +241,8 @@ fun StructDef.fieldsHaveDefaultAlignment(): Boolean {
                 offset = it.offset / 8 + it.typeSize
             }
             is BitField -> return false
+            is AnonymousInnerRecord,
+            is IncompleteField -> {}
         }
     }