sfio sfsync: realign 'pool' type with its use

Squashes a -Wsign-conversion warning.

diff --git a/lib/sfio/sfsync.c b/lib/sfio/sfsync.c
index 6902ddc85a0aa0e4388406f5af7ce98691fc536b..d0481254229c54c5454f798684c0bed2f4269ad3 100644 (file)
--- a/lib/sfio/sfsync.c
+++ b/lib/sfio/sfsync.c
@@ -105,7 +105,7 @@ int sfsync(Sfio_t * f)
            goto next;
 
        if ((f->mode & SF_WRITE) && (f->next > f->data || (f->bits & SF_HOLE))) {       /* sync the buffer, make sure pool don't move */
-           int pool = f->mode & SF_POOL;
+           unsigned pool = f->mode & SF_POOL;
            f->mode &= ~SF_POOL;
            if (f->next > f->data && (SFWRALL(f), SFFLSBUF(f, -1)) < 0)
                rv = -1;