fix(SC2166): use [ p ] && [ q ] over [ p -a q ]

Author: e-kwsm

eos-lxdm-gtk3/Xsession

@@ -4,7 +4,7 @@
 
 echo "Running X session wrapper"
 
-if [ $# -eq 1 -a -n "$1" ]; then
+if [ $# -eq 1 ] && [ -n "$1" ]; then
 	LXSESSION=$1
 else
 # default session
@@ -53,15 +53,15 @@ xinitdir="/etc/X11/xinit/xinitrc.d"
 if [ -d "$xinitdir" ]; then
     for script in $xinitdir/*; do
         echo "Loading xinit script $script"
-        if [ -x "$script" -a ! -d "$script" ]; then
+        if [ -x "$script" ] && ! [ -d "$script" ]; then
             . "$script"
         fi
     done
 fi
 
 # Run user xsession shell script
 script="$HOME/.xsession"
-if [ -x "$script" -a ! -d "$script" ]; then
+if [ -x "$script" ] && ! [ -d "$script" ]; then
     echo "Loading xsession script $script"
     . "$script"
 fi