syntax-check: Add missing contributor name to AUTHORS

For previous commit a5d1d957
(cfr "sound: Fix pointer arithmetic in snd_record_handle_write()")

Signed-off-by: Frediano Ziglio <freddy77@gmail.com>

AUTHORS

@@ -87,5 +87,6 @@ Patches also contributed by
     Simon Chopin <simon.chopin@canonical.com>
     Geoffrey McRae <geoff@hostfission.com>
     Antonio Larrosa <antonio.larrosa@gmail.com>
+    Volker Rümelin <vr_qemu@t-online.de>
 
    ....send patches to get your name here...