[6.0] a6ab945eb Add missing break

[Dridi Boukelmoune]

commit a6ab945ebe966f4da96dbc5b32364b60389712c5
Author: Poul-Henning Kamp <phk at FreeBSD.org>
Date:   Wed Aug 22 07:08:12 2018 +0000

    Add missing break
    
    Conflicts:
            bin/varnishd/cache/cache_vrt.c

diff --git a/bin/varnishd/http2/cache_http2_proto.c b/bin/varnishd/http2/cache_http2_proto.c
index 3851089cd..41a689732 100644
--- a/bin/varnishd/http2/cache_http2_proto.c
+++ b/bin/varnishd/http2/cache_http2_proto.c
@@ -437,6 +437,7 @@ h2_win_adjust(const struct h2_sess *h2, uint32_t oldval, uint32_t newval)
 			 * rfc7540,l,2676,2680
 			 */
 			r2->t_window += (int64_t)newval - oldval;
+			break;
 		default:
 			break;
 		}