8325189: Enable this-escape javac warning in java.base

Reviewed-by: alanb, erikj, naoto, smarks, ihse, joehw, lancea, weijun

src/java.base/share/classes/com/sun/security/ntlm/Server.java

@@ -64,6 +64,7 @@ public abstract class Server extends NTLM {
      * @param domain the domain, must not be null
      * @throws NTLMException if {@code domain} is null.
      */
+    @SuppressWarnings("this-escape")
     public Server(String version, String domain) throws NTLMException {
         super(version);
         if (domain == null) {