Generate correct hashCode when callSuper and no fields included. Fixes #1505

test/transform/resource/after-delombok/EqualsAndHashCodeConfigKeys2.java

@@ -70,8 +70,7 @@ class EqualsAndHashCodeConfigKeys2 extends EqualsAndHashCodeConfigKeys2Parent {
 	@javax.annotation.Generated("lombok")
 	public int hashCode() {
 		final int PRIME = 59;
-		int result = 1;
-		result = result * PRIME + super.hashCode();
+		int result = super.hashCode();
 		result = result * PRIME + this.x;
 		return result;
 	}