[pango/visible-things] pango-view: Boolean options don't take arguments

[Matthias Clasen <matthiasc src gnome org>]

commit cacfd722ed4d704004d850507a4aeee27bb270cb
Author: Matthias Clasen <mclasen redhat com>
Date:   Sun Jul 7 23:48:57 2019 -0400

    pango-view: Boolean options don't take arguments

 utils/viewer-render.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/utils/viewer-render.c b/utils/viewer-render.c
index 8180bb1c..f689bf95 100644
--- a/utils/viewer-render.c
+++ b/utils/viewer-render.c
@@ -727,9 +727,9 @@ parse_options (int argc, char *argv[])
     {"line-spacing",   0, 0, G_OPTION_ARG_DOUBLE,                      &opt_line_spacing,
      "Spread factor for line height",                              "factor"},
     {"show-ignorables",        0, 0, G_OPTION_ARG_NONE,                        &opt_show_ignorables,
-     "Show invisible characters",                                  "show"},
+     "Show invisible characters",                                      NULL},
     {"show-space",     0, 0, G_OPTION_ARG_NONE,                        &opt_show_space,
-     "Show space",                                 "show"},
+     "Show space",                                                     NULL},
     {"justify",                0, 0, G_OPTION_ARG_NONE,                        &opt_justify,
      "Align paragraph lines to be justified",                          NULL},
     {"language",       0, 0, G_OPTION_ARG_STRING,                      &opt_language,