hmp: info spice: take out webdav

Obvious suggestion for the next spice-protocol
release: Add some way to #ifdef new stuff.
Signed-off-by: NGerd Hoffmann <kraxel@redhat.com>
Reviewed-by: NCole Robinson <crobinso@redhat.com>

hmp.c

@@ -561,7 +561,12 @@ void hmp_info_spice(Monitor *mon, const QDict *qdict)
         [SPICE_CHANNEL_SMARTCARD] = "smartcard",
         [SPICE_CHANNEL_USBREDIR] = "usbredir",
         [SPICE_CHANNEL_PORT] = "port",
+#if 0
+        /* minimum spice-protocol is 0.12.3, webdav was added in 0.12.7,
+         * no easy way to #ifdef (SPICE_CHANNEL_* is a enum).  Disable
+         * as quick fix for build failures with older versions. */
         [SPICE_CHANNEL_WEBDAV] = "webdav",
+#endif
     };
 
     info = qmp_query_spice(NULL);