@@ -888,7 +888,7 @@ static void dvbsub_parse_pixel_data_block(AVCodecContext *avctx, DVBSubObjectDis

         av_dlog(avctx, "\n");

 #endif

-    if (region == 0)

+    if (!region)

         return;

     pbuf = region->pbuf;

@@ -1383,7 +1383,7 @@ static void save_display_set(DVBSubContext *ctx)

             clut = get_clut(ctx, region->clut);

-            if (clut == 0)

+            if (!clut)

                 clut = &default_clut;

             switch (region->depth) {