Tidy some signed/unsigned comparisons

Signed-off-by: Steve Bennett <steveb@workware.net.au>

1 files changed, 1 insertions, 1 deletions

diff --git a/jim-aio.c b/jim-aio.c
index 878fabc..313108b 100644
--- a/jim-aio.c
+++ b/jim-aio.c
@@ -224,7 +224,7 @@ static int ssl_reader(struct AioFile *af, char *buf, int len)
 
 static const char *ssl_getline(struct AioFile *af, char *buf, int len)
 {
-    int i;
+    size_t i;
     for (i = 0; i < len + 1; i++) {
         if (SSL_read(af->ssl, &buf[i], 1) != 1) {
             if (i == 0) {