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

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

src/java.base/share/classes/java/util/jar/JarInputStream.java

@@ -120,6 +120,7 @@ public class JarInputStream extends ZipInputStream {
      * it is signed.
      * @throws    IOException if an I/O error has occurred
      */
+    @SuppressWarnings("this-escape")
     public JarInputStream(InputStream in, boolean verify) throws IOException {
         super(in);
         this.doVerify = verify;

src/java.base/share/classes/java/util/jar/JarOutputStream.java

@@ -53,6 +53,7 @@ public class JarOutputStream extends ZipOutputStream {
      * @param man the optional {@code Manifest}
      * @throws    IOException if an I/O error has occurred
      */
+    @SuppressWarnings("this-escape")
     public JarOutputStream(OutputStream out, Manifest man) throws IOException {
         super(out);
         if (man == null) {

src/java.base/share/classes/java/util/jar/Manifest.java

@@ -73,6 +73,7 @@ public class Manifest implements Cloneable {
      * @param is the input stream containing manifest data
      * @throws IOException if an I/O error has occurred
      */
+    @SuppressWarnings("this-escape")
     public Manifest(InputStream is) throws IOException {
         this(null, is, null);
     }