code cleanup: force local var before calling a for loop, make sure it's unset when no longer needed

lib/support.sh

@@ -76,12 +76,19 @@ show_version()
     echo -e "${BWhite}init.sh${DEFAULTCOL} version ${BGreen}$VERSION${DEFAULTCOL}"
     echo ""
     echo "Modules disponibles :"
+    
+    local mod=
     for mod in $MYPATH/modules/*.sh; do
         . $mod
         local modname=$(get_mod_name $mod)
         local version=VER_$modname
+
         echo -e "\t$BWhite$modname${DEFAULTCOL}: $BGreen${!version}$DEFAULTCOL"
+
+        unset modname version
     done
+    unset mod
+    
     if [[ $(id -u) -ne 0 ]]; then
         echo -e "\n${BYellow}Attention :$DEFAULTCOL Ce script requiert les droits d'administration pour fonctionner."
     fi
@@ -98,4 +105,3 @@ get_mod_name()
 export -f get_mod_name
 
 # EOF
-