0 has to be a legal value for vlc_key_t

include/vlc_keys.h

@@ -90,7 +90,8 @@ VLC_EXPORT( char *, KeyToString, (uint_fast32_t i_key) ) LIBVLC_USED;
 VLC_EXPORT( uint_fast32_t, StringToKey,  (char *psz_key) ) LIBVLC_USED;
 
 typedef enum vlc_key {
-    ACTIONID_QUIT = 1,
+    ACTIONID_NONE = 0,
+    ACTIONID_QUIT,
     ACTIONID_PLAY_PAUSE,
     ACTIONID_PLAY,
     ACTIONID_PAUSE,

src/misc/action.c

@@ -59,6 +59,6 @@ vlc_key_t vlc_GetActionId(const char *name)
 
     act = bsearch(name, libvlc_actions, libvlc_actions_count, sizeof(*act),
                   actcmp);
-    return (act != NULL) ? act->value : 0;
+    return (act != NULL) ? act->value : ACTIONID_NONE;
 }