[gnome-session/no-login-shouldnt-log-in] gnome-session: don't validate shell before using it

[Ray Strode <halfline src gnome org>]

commit 63d74edc4b112669fdce14d88d37e2dd0315ff7e
Author: Ray Strode <rstrode redhat com>
Date:   Tue Nov 19 09:29:16 2019 -0500

    gnome-session: don't validate shell before using it
    
    Users sometimes set their shell to an invalid shell to prevent
    login from proceeding.
    
    GNOME on Wayland still allows login in these cases.
    
    This commit makes the behavior match expectations by skipping
    shell validity checks when deciding to run though a login shell.

 gnome-session/gnome-session.in | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)
---
diff --git a/gnome-session/gnome-session.in b/gnome-session/gnome-session.in
index ddd1a591..b4b1f8fa 100755
--- a/gnome-session/gnome-session.in
+++ b/gnome-session/gnome-session.in
@@ -2,10 +2,7 @@
 
 if [ "x$XDG_SESSION_TYPE" = "xwayland" ] &&
    [ "x$XDG_SESSION_CLASS" != "xgreeter" ] &&
-   [  -n "$SHELL" ] &&
-   grep -q "$SHELL" /etc/shells &&
-   ! (echo "$SHELL" | grep -q "false") &&
-   ! (echo "$SHELL" | grep -q "nologin"); then
+   [  -n "$SHELL" ]; then
   if [ "$1" != '-l' ]; then
     exec bash -c "exec -l '$SHELL' -c '$0 -l $*'"
   else