Add explicit test so that non-existence of /usr/games/fortune

doesn't affect command exit status.

share/skel/dot.login

@@ -5,4 +5,4 @@
 # see also csh(1), environ(7).
 #
 
-[ -x /usr/games/fortune ] && /usr/games/fortune freebsd-tips
+if ( -x /usr/games/fortune ) /usr/games/fortune freebsd-tips

share/skel/dot.profile

@@ -21,4 +21,4 @@ PAGER=more;  	export PAGER
 # set ENV to a file invoked each time sh is started for interactive use.
 ENV=$HOME/.shrc; export ENV
 
-[ -x /usr/games/fortune ] && /usr/games/fortune freebsd-tips
+if [ -x /usr/games/fortune ] ; then /usr/games/fortune freebsd-tips ; fi