Patched to compile on Visual Studio.

src/physfs.c

@@ -13,6 +13,35 @@
 #define __PHYSICSFS_INTERNAL__
 #include "physfs_internal.h"
 
+#if defined(_MSC_VER)
+#include <stdarg.h>
+
+/* this code came from https://stackoverflow.com/a/8712996 */
+int __PHYSFS_msvc_vsnprintf(char *outBuf, size_t size, const char *format, va_list ap)
+{
+    int count = -1;
+
+    if (size != 0)
+        count = _vsnprintf_s(outBuf, size, _TRUNCATE, format, ap);
+    if (count == -1)
+        count = _vscprintf(format, ap);
+
+    return count;
+}
+
+int __PHYSFS_msvc_snprintf(char *outBuf, size_t size, const char *format, ...)
+{
+    int count;
+    va_list ap;
+
+    va_start(ap, format);
+    count = __PHYSFS_msvc_vsnprintf(outBuf, size, format, ap);
+    va_end(ap);
+
+    return count;
+}
+#endif
+
 
 typedef struct __PHYSFS_DIRHANDLE__
 {
@@ -2983,33 +3012,5 @@ static void setDefaultAllocator(void)
     } /* if */
 } /* setDefaultAllocator */
 
-
-#if defined(_MSC_VER)
-/* this code came from https://stackoverflow.com/a/8712996 */
-int __PHYSFS_msvc_vsnprintf(char *outBuf, size_t size, const char *format, va_list ap)
-{
-    int count = -1;
-
-    if (size != 0)
-        count = _vsnprintf_s(outBuf, size, _TRUNCATE, format, ap);
-    if (count == -1)
-        count = _vscprintf(format, ap);
-
-    return count;
-}
-
-int __PHYSFS_msvc_snprintf(char *outBuf, size_t size, const char *format, ...)
-{
-    int count;
-    va_list ap;
-
-    va_start(ap, format);
-    count = c99_vsnprintf(outBuf, size, format, ap);
-    va_end(ap);
-
-    return count;
-}
-#endif
-
 /* end of physfs.c ... */