Port fix from master.

Author: rlubke

src/main/java/com/ning/http/client/providers/grizzly/GrizzlyAsyncHttpProvider.java

@@ -1688,7 +1688,7 @@ private static final class ClientEncodingFilter implements EncodingFilter {
         public boolean applyEncoding(HttpHeader httpPacket) {
 
            httpPacket.addHeader(Header.AcceptEncoding, "gzip");
-           return true;
+           return false;
 
         }