Fix example for initialize method name change
diff --git a/example/gifplayer/gifplayer.c b/example/gifplayer/gifplayer.c
index f884a86..42ab767 100644
--- a/example/gifplayer/gifplayer.c
+++ b/example/gifplayer/gifplayer.c
@@ -323,7 +323,7 @@
     }
 
     // Override the source's indexed pixel format to be non-indexed.
-    wuffs_base__pixel_config__initialize(
+    wuffs_base__pixel_config__set(
         &ic.pixcfg, WUFFS_BASE__PIXEL_FORMAT__BGRA_PREMUL,
         WUFFS_BASE__PIXEL_SUBSAMPLING__NONE, width, height);