control flow: visit assignment lValue only once (EA-51083 - ESE: Stack.pop)

java/java-tests/testData/inspection/dataFlow/fixture/NotEqualsTypo.java

@@ -0,0 +1,12 @@
+class Some {
+  boolean foo(Object first, Object second) {
+    boolean isEqual = true;
+
+    if (<error descr="Operator '||' cannot be applied to 'boolean', 'java.lang.Object'">first != null || second</error> -= null) {
+      return isEqual;
+    }
+
+    return isEqual;
+  }
+
+}