LocalCanBeFinal: fix false negative in lambda body

#IDEA-227649

GitOrigin-RevId: 33a5c47c1cad5c2a6057ad97fad74d74962252ae

java/java-analysis-impl/src/com/intellij/codeInspection/localCanBeFinal/LocalCanBeFinal.java

@@ -221,6 +221,9 @@ public class LocalCanBeFinal extends AbstractBaseJavaLocalInspectionTool impleme
       }
 
       @Override public void visitReferenceExpression(PsiReferenceExpression expression) {
+        if (expression.getParent() instanceof PsiMethodCallExpression) {
+          super.visitReferenceExpression(expression);
+        }
       }
     });
 

java/java-tests/testData/inspection/localCanBeFinal/LambdaBody2.java

@@ -0,0 +1,25 @@
+import java.util.List;
+import java.util.stream.Collectors;
+import java.util.stream.Stream;
+
+class Test {
+  void test() {
+    List<Integer> <warning descr="Variable 'list' can have 'final' modifier">list</warning> = Stream.of(1, 2, 3)
+      .map(i -> {
+        int <warning descr="Variable 'res' can have 'final' modifier">res</warning> = i + 1;
+        System.out.println(res);
+        return res;
+      })
+      .map(i -> {
+        int <warning descr="Variable 'res' can have 'final' modifier">res</warning> = i + 2;
+        System.out.println(res);
+        return res;
+      })
+      .map(i -> {
+        int <warning descr="Variable 'res' can have 'final' modifier">res</warning> = i + 3;
+        System.out.println(res);
+        return res;
+      })
+      .collect(Collectors.toList());
+  }
+}

java/java-tests/testSrc/com/intellij/java/codeInspection/LocalCanBeFinalTest.java

@@ -124,6 +124,11 @@ public class LocalCanBeFinalTest extends LightJavaCodeInsightFixtureTestCase {
     doTest();
   }
 
+  public void testLambdaBody2() {
+    myTool.REPORT_VARIABLES = true;
+    doTest();
+  }
+
   public void testForeachNotReported() {
     myTool.REPORT_PARAMETERS = true;
     myTool.REPORT_VARIABLES = false;