Rename --exit-when-zero flag to --exit-at-zero, in accordance with docs.


git-svn-id: svn://svn.valgrind.org/valgrind/trunk@1291 a5019735-40e9-0310-863c-91ae7b9d1cf9
diff --git a/auxprogs/valgrind-listener.c b/auxprogs/valgrind-listener.c
index 53688cb..13d7702 100644
--- a/auxprogs/valgrind-listener.c
+++ b/auxprogs/valgrind-listener.c
@@ -188,9 +188,9 @@
       "\n"
       "usage is:\n"
       "\n"
-      "   valgrind-listener [--exit-when-zero|-e] [port-number]\n"
+      "   valgrind-listener [--exit-at-zero|-e] [port-number]\n"
       "\n"
-      "   where   --exit-when-zero or -e causes the listener to exit\n"
+      "   where   --exit-at-zero or -e causes the listener to exit\n"
       "           when the number of connections falls back to zero\n"
       "           (the default is to keep listening forever)\n"
       "\n"
@@ -236,7 +236,7 @@
    int           port = VG_CLO_DEFAULT_LOGPORT;
 
    for (i = 1; i < argc; i++) {
-      if (0==strcmp(argv[i], "--exit-when-zero")
+      if (0==strcmp(argv[i], "--exit-at-zero")
           || 0==strcmp(argv[i], "-e")) {
          exit_when_zero = 1;
       }