autoconf: Checks for libraries

diff --git a/imap-send.c b/imap-send.c
index 94e39cd94cb26b2147e214ce4032121df871834e..65c71c602db022f65660b1c29f54ddd59a3b0363 100644 (file)
--- a/imap-send.c
+++ b/imap-send.c
@@ -242,7 +242,7 @@ socket_read( Socket_t *sock, char *buf, int len )
 }
 
 static int
-socket_write( Socket_t *sock, char *buf, int len )
+socket_write( Socket_t *sock, const char *buf, int len )
 {
        int n = write( sock->fd, buf, len );
        if (n != len) {