Backport AsyncHttpClient#946

Author: slandelle

src/main/java/com/ning/http/client/providers/netty/request/body/FeedableBodyGenerator.java

@@ -79,10 +79,10 @@ public long read(final ByteBuffer buffer) throws IOException {
                 case CLOSING:
                     buffer.put(ZERO);
                     buffer.put(END_PADDING);
+                    buffer.put(END_PADDING);
                     finishState = FINISHED;
                     return buffer.position();
                 case FINISHED:
-                    buffer.put(END_PADDING);
                     return -1;
                 }
             }