libvlc_stats: use VLC_OBJECT to remove a bunch of warnings

src/input/stream.c

@@ -1752,7 +1752,7 @@ static block_t *AReadBlock( stream_t *s, bool *pb_eof )
     {
         p_block = p_access->pf_block( p_access );
         if( pb_eof ) *pb_eof = p_access->info.b_eof;
-        if( p_input && p_block && libvlc_stats (VLC_OBJECT(p_access)) )
+        if( p_input && p_block && libvlc_stats (p_access) )
         {
             vlc_mutex_lock( &p_input->p->counters.counters_lock );
             stats_UpdateInteger( s, p_input->p->counters.p_read_bytes,

src/libvlc.h

@@ -242,10 +242,7 @@ static inline libvlc_priv_t *libvlc_priv (libvlc_int_t *libvlc)
     return (libvlc_priv_t *)(libvlc + 1);
 }
 
-static inline bool libvlc_stats (vlc_object_t *obj)
-{
-   return libvlc_priv (obj->p_libvlc)->b_stats;
-}
+#define libvlc_stats( o ) (libvlc_priv((VLC_OBJECT(o))->p_libvlc)->b_stats)
 
 /**
  * LibVLC "main module" configuration settings array.