badwords: catch and fix more variants of NN-bit

Closes #20304

tests/runtests.pl

@@ -2633,7 +2633,7 @@ if(!$randseed) {
     close($curlvh) || die "could not get curl version!";
     # use the first line of output and get the md5 out of it
     my $str = md5($c[0]);
-    $randseed += unpack('S', $str);  # unsigned 16 bit value
+    $randseed += unpack('S', $str);  # unsigned 16-bit value
 }
 srand $randseed;