EWMH: Ignore invalid _NET_WM_DESKTOP

Commit e291c0398 already made awesome ignore invalid values for _NET_WM_DESKTOP.
That commit just made it tag clients with the first tag if they used an invalid
value for this property.

This commit reverts 90% of that change. What is still left is the range
validation. Previously, awesome would untag a client completely when it got such
a _NET_WM_DESKTOP property / message. Now, such messages are just silently
ignored.

Signed-off-by: Uli Schlachter <psychon@znc.in>

ewmh.c

@@ -374,13 +374,6 @@ ewmh_process_desktop(client_t *c, uint32_t desktop)
             }
             else
                 untag_client(c, globalconf.tags.tab[i]);
-    else
-        /* Value out of bounds, just give it the first tag */
-        if (globalconf.tags.len > 0)
-        {
-            luaA_object_push(globalconf.L, globalconf.tags.tab[0]);
-            tag_client(c);
-        }
 }
 
 int