contrib/sort_downloads: fix missing C include

Signed-off-by: Alexis Laferrière <alexis.laf@xymus.net>

diff --git a/contrib/sort_downloads/src/sort_downloads.nit b/contrib/sort_downloads/src/sort_downloads.nit
index ba96d5d..cb9caa5 100755 (executable)
--- a/contrib/sort_downloads/src/sort_downloads.nit
+++ b/contrib/sort_downloads/src/sort_downloads.nit
@@ -26,7 +26,8 @@ module sort_downloads
 import opts
 
 `{
-#include <errno.h>
+       #include <errno.h>
+       #include <string.h>
 `}
 
 # Local config