segfault in hostnames_matching

[Grisha Levit]

another size_t issue

diff --git a/bashline.c b/bashline.c
index 0047caef..9df26d2e 100644
--- a/bashline.c
+++ b/bashline.c
@@ -919,7 +919,7 @@ hostnames_matching (const char *text)
        continue;

       /* OK, it matches.  Add it to the list. */
-      if (nmatch >= (rsize - 1))
+      if ((nmatch + 1) >= rsize)
        {
          rsize = (rsize + 16) - (rsize % 16);
          result = strvec_resize (result, rsize);