send fix signed of length variable

diff --git a/uip/send.c b/uip/send.c
index f4169ee..1df2fa9 100644 (file)
--- a/uip/send.c
+++ b/uip/send.c
@@ -333,7 +333,7 @@ attach(char *draft_file_name)
        int compnum;
        int finished_header = 0;
        char buf[MAXPATHLEN + 6];
-       int length = strlen(attach_hdr);
+       size_t length = strlen(attach_hdr);
        char *p;
 
        if(distfile) {