translator: fix class reassigment

translator/src/main/kotlin/org/kotlinnative/translator/BlockCodegen.kt

@@ -729,7 +729,8 @@ abstract class BlockCodegen(val state: TranslationState, val variableManager: Va
                 }
 
                 val result = firstOp as LLVMVariable
-                codeBuilder.storeVariable(result, secondNativeOp)
+                val sourceArgument = if (result.pointer == secondOp.pointer + 1) secondOp else secondNativeOp
+                codeBuilder.storeVariable(result, sourceArgument)
                 return result
             }
             else -> addPrimitiveReferenceOperation(referenceName!!, firstOp, secondNativeOp)

translator/src/test/kotlin/tests/input/class_reassigment_1.txt

@@ -0,0 +1 @@
+class_reassigment_1() == 567

translator/src/test/kotlin/tests/kotlin/class_reassigment_1.kt

@@ -0,0 +1,12 @@
+class class_reassigment_1_class(val field: Int)
+
+fun class_reassigment_1_base() : class_reassigment_1_class{
+    val instance = class_reassigment_1_class(567)
+    return instance
+}
+
+fun class_reassigment_1(): Int{
+    var instance = class_reassigment_1_class(123)
+    instance = class_reassigment_1_base()
+    return instance.field
+}