diff -rupN metapixel-1.0.2/rwimg/rwgif.c metapixel-1.0.2-new/rwimg/rwgif.c
--- metapixel-1.0.2/rwimg/rwgif.c	2006-12-10 18:59:54.000000000 +0100
+++ metapixel-1.0.2-new/rwimg/rwgif.c	2018-01-22 23:17:13.322206515 +0100
@@ -54,7 +54,7 @@ open_gif_file (const char *filename, int
     
     assert(data != 0);
     
-    data->file = DGifOpenFileName(filename);
+    data->file = DGifOpenFileName(filename, NULL);
     
     assert(data->file !=0);
         
@@ -137,7 +137,7 @@ open_gif_file (const char *filename, int
     }
     free(buffer);
     
-    assert(DGifCloseFile(data->file) == GIF_OK);
+    assert(DGifCloseFile(data->file, NULL) == GIF_OK);
     
     return data;
 }