inline variable: if def in assignment expr replace with def if not stmt

otherwise containing expression would miss a part (IDEA-152813)

java/java-impl/src/com/intellij/refactoring/inline/InlineLocalHandler.java

@@ -273,7 +273,7 @@ public class InlineLocalHandler extends JavaInlineActionHandler {
 
           if (inlineAll.get()) {
             if (!isInliningVariableInitializer(defToInline)) {
-              defToInline.getParent().delete();
+              deleteInitializer(defToInline);
             } else {
               defToInline.delete();
             }
@@ -306,6 +306,19 @@ public class InlineLocalHandler extends JavaInlineActionHandler {
     CommandProcessor.getInstance().executeCommand(project, () -> PostprocessReformattingAspect.getInstance(project).postponeFormattingInside(runnable), RefactoringBundle.message("inline.command", localName), null);
   }
 
+  private static void deleteInitializer(@NotNull PsiExpression defToInline) {
+    PsiElement parent = defToInline.getParent();
+    if (parent instanceof PsiAssignmentExpression) {
+      PsiElement gParent = PsiUtil.skipParenthesizedExprUp(parent.getParent());
+      if (!(gParent instanceof PsiExpressionStatement)) {
+        parent.replace(defToInline);
+        return;
+      }
+    }
+    
+    parent.delete();
+  }
+
   @Nullable
   public static PsiElement checkRefsInAugmentedAssignmentOrUnaryModified(final PsiElement[] refsToInline, PsiElement defToInline) {
     for (PsiElement element : refsToInline) {

java/java-tests/testData/refactoring/inlineLocal/DefInMultiAssignmentStatement.java

@@ -0,0 +1,8 @@
+class Test {
+    {
+        int i, j;
+        i = j = 0;
+        System.out.println(<caret>j);
+
+    }
+}

java/java-tests/testData/refactoring/inlineLocal/DefInMultiAssignmentStatement.java.after

@@ -0,0 +1,8 @@
+class Test {
+    {
+        int i;
+        i = 0;
+        System.out.println(0);
+
+    }
+}

java/java-tests/testSrc/com/intellij/java/refactoring/inline/InlineLocalTest.java

@@ -301,9 +301,8 @@ public class InlineLocalTest extends LightCodeInsightTestCase {
     doTest(false);
   }
 
-  public void testLocalInsideLambdaWithNestedLambda() {
-    doTest(true);
-  }
+  public void testLocalInsideLambdaWithNestedLambda() { doTest(true); }
+  public void testDefInMultiAssignmentStatement() { doTest(true); }
 
   private void doTest(final boolean inlineDef, String conflictMessage) {
     try {