wwviaudio: Mark examples as not compiling

The example code in wwviaudio doesn't compile as is.  Mark it as an
expected failure for ccanlint.

Signed-off-by: David Gibson <david@gibson.dropbear.id.au>

ccan/wwviaudio/_info

@@ -37,8 +37,8 @@
  *      wwviaudio_cancel_all_sounds();
  *      wwviaduio_stop_portaudio();
  *
+ * Ccanlint: examples_compile FAIL
  * License: GPL (v2 or any later version)
- *
  */
 int main(int argc, char *argv[])
 {