hddtemp: Improve robustness of test

Don't rely on signedness of buffer_size.

diff --git a/src/hddtemp.c b/src/hddtemp.c
index 4e275dc..1178537 100644 (file)
--- a/src/hddtemp.c
+++ b/src/hddtemp.c
@@ -171,7 +171,7 @@ static char *hddtemp_query_daemon (void)
        buffer_fill = 0;
        while (1)
        {
-               if (buffer_fill >= buffer_size - 1)
+               if ((buffer_size == 0) || (buffer_fill >= buffer_size - 1))
                {
                        if (buffer_size == 0)
                                buffer_size = 1024;