only mingw has this problem..

client/scandir.c

@@ -12,6 +12,8 @@
 
 #include "scandir.h"
 
+#ifdef _WIN32
+
 
 #ifdef __cplusplus
 extern "C" {
@@ -89,3 +91,5 @@ int alphasort (const struct dirent **a, const struct dirent **b)
 #ifdef __cplusplus
 }
 #endif
+
+#endif  // win32

client/scandir.h

@@ -15,9 +15,8 @@
 #include <stdlib.h>
 
 #ifdef _WIN32
-#else
-#endif // _WIN32
-
 extern int scandir (const char *dir, struct dirent ***namelist, int (*select) (const struct dirent *), int (*compar) (const struct dirent **, const struct dirent **));
 extern int alphasort (const struct dirent **a, const struct dirent **b);
+#endif // _WIN32
+
 #endif // SCANDIR_H__