Replace xmalloc/memset(0) pairs with xcalloc

diff --git a/builtin-help.c b/builtin-help.c
index 721038e4f55703d00efc62af8ccf4588182fb58f..64207cbfe909d17ea9698d3ff680203eee9f5c01 100644 (file)
--- a/builtin-help.c
+++ b/builtin-help.c
@@ -361,12 +361,15 @@ static void show_man_page(const char *git_cmd)
 {
        struct man_viewer_list *viewer;
        const char *page = cmd_to_page(git_cmd);
+       const char *fallback = getenv("GIT_MAN_VIEWER");
 
        setup_man_path();
        for (viewer = man_viewer_list; viewer; viewer = viewer->next)
        {
                exec_viewer(viewer->name, page); /* will return when unable */
        }
+       if (fallback)
+               exec_viewer(fallback, page);
        exec_viewer("man", page);
        die("no man viewer handled the request");
 }