Do not store null for temporary in destructuring assignment

#KT-19256 Fixed Target versions 1.1.5

compiler/backend/src/org/jetbrains/kotlin/codegen/ExpressionCodegen.java

@@ -3457,10 +3457,6 @@ public class ExpressionCodegen extends KtVisitor<StackValue, StackValue> impleme
 
         initializeDestructuringDeclarationVariables(multiDeclaration, initializerAsReceiver, local, asProperty);
 
-        if (initializerAsmType.getSort() == Type.OBJECT || initializerAsmType.getSort() == Type.ARRAY) {
-            v.aconst(null);
-            v.store(tempVarIndex, initializerAsmType);
-        }
         myFrameMap.leaveTemp(initializerAsmType);
 
         return StackValue.none();

compiler/testData/codegen/bytecodeText/doNotStoreNullForTmpInDestructuring.kt

@@ -0,0 +1,5 @@
+fun test(p: Pair<Int, Int>) {
+    val (x, y) = p
+}
+
+// 0 ACONST_NULL

compiler/tests/org/jetbrains/kotlin/codegen/BytecodeTextTestGenerated.java

@@ -132,6 +132,12 @@ public class BytecodeTextTestGenerated extends AbstractBytecodeTextTest {
         doTest(fileName);
     }
 
+    @TestMetadata("doNotStoreNullForTmpInDestructuring.kt")
+    public void testDoNotStoreNullForTmpInDestructuring() throws Exception {
+        String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/codegen/bytecodeText/doNotStoreNullForTmpInDestructuring.kt");
+        doTest(fileName);
+    }
+
     @TestMetadata("doNotStoreNullsForCapturedVars.kt")
     public void testDoNotStoreNullsForCapturedVars() throws Exception {
         String fileName = KotlinTestUtils.navigationMetadata("compiler/testData/codegen/bytecodeText/doNotStoreNullsForCapturedVars.kt");