checkimg: Don't complain about every mismatch.

We can tell from the summary.

diff --git a/checkimg b/checkimg
index b4d71bd..7d426b7 100755 (executable)
--- a/checkimg
+++ b/checkimg
@@ -60,7 +60,7 @@ SECTOR: for (;;) {
   my $newst;
   if ($cbuf eq $obuf) { $newst = 'copy'; }
   elsif ($cbuf eq $ZERO) { $newst = 'zero'; }
-  else { bad "corrupted sector #$i in `$copy'"; $newst = 'bogus'; }
+  else { $newst = 'bogus'; }
   update $newst; $i++;
 }
 update 'end';