fix check for MSVC

fixed RT 23922

diff --git a/gif.c b/gif.c
index a31cc9a0048f471caad04bd424c7bea73aef26c5..c1a82c97cc8deabcf63e9d67c120255b26a8c2fa 100644 (file)
--- a/gif.c
+++ b/gif.c
@@ -1,6 +1,6 @@
 #include "imageri.h"
 #include <gif_lib.h>
-#ifdef _MSCVER
+#ifdef _MSC_VER
 #include <io.h>
 #else
 #include <unistd.h>