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/io/PipedInputStream.java

@@ -122,6 +122,7 @@ public class PipedInputStream extends InputStream {
      * @throws     IllegalArgumentException if {@code pipeSize <= 0}.
      * @since      1.6
      */
+    @SuppressWarnings("this-escape")
     public PipedInputStream(PipedOutputStream src, int pipeSize)
             throws IOException {
          initPipe(pipeSize);