Use explicit non-char opt for --zero-super

As we don't allow '-K' for '--zero-super' there is no point
using it internally.  Just define a 'KillOpt' like with
other options.

Signed-off-by: NeilBrown <neilb@suse.de>

1 files changed, 1 insertions, 1 deletions

diff --git a/ReadMe.c b/ReadMe.c
index 1efc4470..fa71ec94 100644
--- a/ReadMe.c
+++ b/ReadMe.c
@@ -86,7 +86,7 @@ struct option long_options[] = {
     {"follow",    0, 0, 'F'},
     {"grow",      0, 0, 'G'},
     {"incremental",0,0, 'I'},
-    {"zero-superblock", 0, 0, 'K'}, /* deliberately not a short_option */
+    {"zero-superblock", 0, 0, KillOpt}, /* deliberately not a short_option */
     {"query",	  0, 0, 'Q'},
     {"examine-bitmap", 0, 0, 'X'},
     {"auto-detect", 0, 0, AutoDetect},