Fix memleak (same problem with var_Change())

src/control/video.c

@@ -334,7 +334,7 @@ void libvlc_video_set_viewport( libvlc_instance_t *p_instance, libvlc_media_play
         }
     }
 #else
-    (void) p_instance; (void) view; (void) clip; (void) p_e;
+    (void) p_instance; (void) p_mi; (void) view; (void) clip; (void) p_e;
 #endif
 }
 
@@ -417,13 +417,13 @@ int libvlc_video_get_spu( libvlc_media_player_t *p_mi,
     var_Change( p_input_thread, "spu-es", VLC_VAR_GETCHOICES, &val_list, NULL );
     for( i = 0; i < val_list.p_list->i_count; i++ )
     {
-        vlc_value_t spu_val = val_list.p_list->p_values[i];
-        if( val.i_int == spu_val.i_int )
+        if( val.i_int == val_list.p_list->p_values[i].i_int )
         {
             i_spu = i;
             break;
         }
     }
+    var_Change( p_input_thread, "spu-es", VLC_VAR_FREELIST, &val_list, NULL );
     vlc_object_release( p_input_thread );
     return i_spu;
 }
@@ -433,13 +433,17 @@ int libvlc_video_get_spu_count( libvlc_media_player_t *p_mi,
 {
     input_thread_t *p_input_thread = libvlc_get_input_thread( p_mi, p_e );
     vlc_value_t val_list;
+    int i_spu_count;
 
     if( !p_input_thread )
         return -1;
 
     var_Change( p_input_thread, "spu-es", VLC_VAR_GETCHOICES, &val_list, NULL );
+    i_spu_count = val_list.p_list->i_count;
+    var_Change( p_input_thread, "spu-es", VLC_VAR_FREELIST, &val_list, NULL );
+
     vlc_object_release( p_input_thread );
-    return val_list.p_list->i_count;
+    return i_spu_count;
 }
 
 libvlc_track_description_t *
@@ -464,15 +468,13 @@ void libvlc_video_set_spu( libvlc_media_player_t *p_mi, int i_spu,
     if( val_list.p_list->i_count == 0 )
     {
         libvlc_exception_raise( p_e, "Subtitle value out of range" );
-        vlc_object_release( p_input_thread );
-        return;
+        goto end;
     }
 
     if( (i_spu < 0) && (i_spu > val_list.p_list->i_count) )
     {
         libvlc_exception_raise( p_e, "Subtitle value out of range" );
-        vlc_object_release( p_input_thread );
-        return;
+        goto end;
     }
 
     newval = val_list.p_list->p_values[i_spu];
@@ -481,6 +483,9 @@ void libvlc_video_set_spu( libvlc_media_player_t *p_mi, int i_spu,
     {
         libvlc_exception_raise( p_e, "Setting subtitle value failed" );
     }
+
+end:
+    var_Change( p_input_thread, "spu-es", VLC_VAR_FREELIST, &val_list, NULL );
     vlc_object_release( p_input_thread );
 }
 
@@ -653,13 +658,17 @@ int libvlc_video_get_track_count( libvlc_media_player_t *p_mi,
 {
     input_thread_t *p_input_thread = libvlc_get_input_thread( p_mi, p_e );
     vlc_value_t val_list;
+    int i_track_count;
 
     if( !p_input_thread )
         return -1;
 
     var_Change( p_input_thread, "video-es", VLC_VAR_GETCHOICES, &val_list, NULL );
+    i_track_count = val_list.p_list->i_count;
+    var_Change( p_input_thread, "video-es", VLC_VAR_FREELIST, &val_list, NULL );
+
     vlc_object_release( p_input_thread );
-    return val_list.p_list->i_count;
+    return i_track_count;
 }
 
 libvlc_track_description_t *
@@ -693,13 +702,13 @@ int libvlc_video_get_track( libvlc_media_player_t *p_mi,
     var_Change( p_input_thread, "video-es", VLC_VAR_GETCHOICES, &val_list, NULL );
     for( i = 0; i < val_list.p_list->i_count; i++ )
     {
-        vlc_value_t track_val = val_list.p_list->p_values[i];
-        if( track_val.i_int == val.i_int )
+        if( val_list.p_list->p_values[i].i_int == val.i_int )
         {
             i_track = i;
             break;
         }
     }
+    var_Change( p_input_thread, "video-es", VLC_VAR_FREELIST, &val_list, NULL );
     vlc_object_release( p_input_thread );
     return i_track;
 }
@@ -724,11 +733,13 @@ void libvlc_video_set_track( libvlc_media_player_t *p_mi, int i_track,
             i_ret = var_Set( p_input_thread, "audio-es", val );
             if( i_ret < 0 )
                 libvlc_exception_raise( p_e, "Setting video track failed" );
-            vlc_object_release( p_input_thread );
-            return;
+            goto end;
         }
     }
     libvlc_exception_raise( p_e, "Video track out of range" );
+
+end:
+    var_Change( p_input_thread, "video-es", VLC_VAR_FREELIST, &val_list, NULL );
     vlc_object_release( p_input_thread );
 }