8275149: (ch) ReadableByteChannel returned by Channels.newChannel(InputStream) throws ReadOnlyBufferException

Reviewed-by: alanb

src/java.base/share/classes/java/nio/channels/Channels.java

@@ -295,6 +295,9 @@ public final class Channels {
             if (!isOpen()) {
                 throw new ClosedChannelException();
             }
+            if (dst.isReadOnly()) {
+                throw new IllegalArgumentException();
+            }
 
             int len = dst.remaining();
             int totalRead = 0;