lib: Fixed bioprintf bug.

diff --git a/lib/bufio.c b/lib/bufio.c
index c08e9dd9a96f18ec2c1c974ec37697f597580e75..11d8c04252d373d4f2df8604e82adfeedc20722b 100644 (file)
--- a/lib/bufio.c
+++ b/lib/bufio.c
@@ -289,11 +289,11 @@ int bioprintf(struct bufio *bio, const char *format, ...)
        va_start(args, format);
        ret = vsnprintf(bio->wbuf.b + bio->wbuf.d, bio->wbuf.s - bio->wbuf.d, format, args);
        va_end(args);
-       if(ret <= bio->wbuf.s - bio->wbuf.d) {
+       if(ret < bio->wbuf.s - bio->wbuf.d) {
            bio->wbuf.d += ret;
            return(0);
        }
-       if(biowensure(bio, ret) < 0)
+       if(biowensure(bio, ret + 1) < 0)
            return(-1);
     }
 }