driftnet: fix

The "unused" sentinel value was removed in libwebsockets 4.3.0;
we can no longer pass it in structure initialization.

pkgs/tools/networking/driftnet/default.nix

@@ -35,6 +35,8 @@ stdenv.mkDerivation rec {
       url = "https://github.com/deiv/driftnet/pull/33/commits/bef5f3509ab5710161e9e21ea960a997eada534f.patch";
       sha256 = "1b7p9fkgp7dxv965l7q7y632s80h3nnrkaqnak2h0hakwv0i4pvm";
     })
+    # https://github.com/deiv/driftnet/issues/37
+    ./libwebsockets-4.3.0.patch
   ];
 
   enableParallelBuilding = true;

pkgs/tools/networking/driftnet/libwebsockets-4.3.0.patch

@@ -0,0 +1,12 @@
+diff --git a/src/http_display/httpd.c b/src/http_display/httpd.c
+index f4709ef..7921d23 100644
+--- a/src/http_display/httpd.c
++++ b/src/http_display/httpd.c
+@@ -191,7 +191,6 @@ static void * http_server_dispatch(void *arg)
+         LWSMPRO_FILE,                  /* mount type is a directory in a filesystem */
+         1,                                     /* strlen("/"), ie length of the mountpoint */
+         NULL,
+-        { NULL, NULL } // sentinel
+     };
+
+     memset(&info, 0, sizeof info);