volatile field's nullity shouldn't be used for dfa (IDEA-64696)

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

@@ -0,0 +1,26 @@
+import javax.swing.*;
+
+class Test {
+    public void setObj(Object obj) {
+        this.obj = obj;
+    }
+
+    public void test() {
+        obj = new Object();
+        javax.swing.SwingUtilities.invokeLater(new Runnable() {
+            public void run() {
+                Object o = obj;
+                if (o != null) {
+                    System.out.println("x");
+                }
+            }
+        });
+        final Object u = new Object();
+        if (<warning descr="Condition 'u != null'  is always 'true'">u != null</warning>) {
+          System.out.println("y");
+        }
+        obj = null;
+    }
+
+    private volatile Object obj;
+}

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

@@ -0,0 +1,24 @@
+import org.jetbrains.annotations.NotNull;
+
+import javax.swing.*;
+
+class Test {
+    public void setObj(Object obj) {
+        this.obj = obj;
+    }
+
+    public void test() {
+        obj = new Object();
+        SwingUtilities.invokeLater(new Runnable() {
+            public void run() {
+                Object o = obj;
+                if (<warning descr="Condition 'o != null'  is always 'true'">o != null</warning>) {
+                    System.out.println("x");
+                }
+            }
+        });
+      obj = <warning descr="'null' is assigned to a variable that is annotated with @NotNull">null</warning>;
+    }
+
+    @NotNull private volatile Object obj;
+}