Avoid a segfault for wc --files0=- < /dev/null.

* src/wc.c (compute_number_width): Return right away if nfiles == 0.

1 files changed, 1 insertions, 1 deletions

diff --git a/src/wc.c b/src/wc.c
index 29c624015..1da5373e3 100644
--- a/src/wc.c
+++ b/src/wc.c
@@ -573,7 +573,7 @@ compute_number_width (int nfiles, struct fstatus const *fstatus)
 {
   int width = 1;
 
-  if (fstatus[0].failed <= 0)
+  if (0 < nfiles && fstatus[0].failed <= 0)
     {
       int minimum_width = 1;
       uintmax_t regular_total = 0;