master d9abc45: * src/image.c: Fix building with giflib on MS-Windows.

[Stefan Kangas]

branch: master
commit d9abc45ab53dbed31a5853087a7be21e804d9668
Author: Stefan Kangas <stefan@marxist.se>
Commit: Stefan Kangas <stefan@marxist.se>

    * src/image.c: Fix building with giflib on MS-Windows.
---
 src/image.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/src/image.c b/src/image.c
index 376a53e..6ab9670 100644
--- a/src/image.c
+++ b/src/image.c
@@ -8277,6 +8277,8 @@ DEF_DLL_FN (GifFileType *, DGifOpenFileName, (const char 
*));
 #  else
 DEF_DLL_FN (GifFileType *, DGifOpen, (void *, InputFunc, int *));
 DEF_DLL_FN (GifFileType *, DGifOpenFileName, (const char *, int *));
+DEF_DLL_FN (int, DGifSavedExtensionToGCB, (GifFileType *, int,
+                                          GraphicsControlBlock *));
 #  endif
 #  if HAVE_GIFERRORSTRING
 DEF_DLL_FN (char const *, GifErrorString, (int));
@@ -8294,6 +8296,9 @@ init_gif_functions (void)
   LOAD_DLL_FN (library, DGifSlurp);
   LOAD_DLL_FN (library, DGifOpen);
   LOAD_DLL_FN (library, DGifOpenFileName);
+#  if GIFLIB_MAJOR >= 5
+  LOAD_DLL_FN (library, DGifSavedExtensionToGCB);
+#  endif
 #  if HAVE_GIFERRORSTRING
   LOAD_DLL_FN (library, GifErrorString);
 #  endif
@@ -8304,12 +8309,14 @@ init_gif_functions (void)
 #  undef DGifOpen
 #  undef DGifOpenFileName
 #  undef DGifSlurp
+#  undef DGifSavedExtensionToGCB
 #  undef GifErrorString
 
 #  define DGifCloseFile fn_DGifCloseFile
 #  define DGifOpen fn_DGifOpen
 #  define DGifOpenFileName fn_DGifOpenFileName
 #  define DGifSlurp fn_DGifSlurp
+#  define DGifSavedExtensionToGCB fn_DGifSavedExtensionToGCB
 #  define GifErrorString fn_GifErrorString
 
 # endif /* WINDOWSNT */