lua_input: grab the input lock only one time when reading the metas (do not...

lua_input: grab the input lock only one time when reading the metas (do not lock/unlock for each meta).

modules/misc/lua/libs/input.c

@@ -113,19 +113,23 @@ static int vlclua_input_metas_internal( lua_State *L, input_item_t *p_item )
     }
 
     lua_newtable( L );
-    char *psz_meta;
+    char *psz_name;
+    const char *psz_meta;
 
-    psz_meta = input_item_GetName( p_item );
-    lua_pushstring( L, psz_meta );
+    psz_name = input_item_GetName( p_item );
+    lua_pushstring( L, psz_name );
     lua_setfield( L, -2, "filename" );
-    free( psz_meta );
+    free( psz_name );
 
 #define PUSH_META( n, m ) \
-    psz_meta = input_item_GetMeta( p_item, vlc_meta_ ## n ); \
+    psz_meta = vlc_meta_Get( p_item->p_meta, vlc_meta_ ## n ); \
     lua_pushstring( L, psz_meta ); \
-    lua_setfield( L, -2, m ); \
-    free( psz_meta )
+    lua_setfield( L, -2, m )
 
+    vlc_mutex_lock(&p_item->lock);
+
+    if (p_item->p_meta)
+    {
         PUSH_META( Title, "title" );
         PUSH_META( Artist, "artist" );
         PUSH_META( Genre, "genre" );
@@ -146,9 +150,7 @@ static int vlclua_input_metas_internal( lua_State *L, input_item_t *p_item )
 
 #undef PUSH_META
 
-    vlc_mutex_lock(&p_item->lock);
-    if (p_item->p_meta) {
-        char ** names = vlc_meta_CopyExtraNames(p_item->p_meta);
+        char **names = vlc_meta_CopyExtraNames(p_item->p_meta);
         for(int i = 0; names[i]; i++)
         {
             const char *meta = vlc_meta_GetExtra(p_item->p_meta, names[i]);