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

lib/services.sh

@@ -23,10 +23,14 @@ exec_serv()
     shift 2
 
     local lineexec=$(echo $INIT_COM |
-			 sed -e s/%srv%/$svcname/ \
-			     -e s/%com%/$command/)
+                        sed -e s/%srv%/$svcname/ \
+                            -e s/%com%/$command/)
+    unset svcname command
+
     prnt I "Lancement de la commande $command du services $svcname"
     $lineexec
+
+    unset lineexec
 }
 export exec_serv
 
@@ -35,9 +39,11 @@ export exec_serv
 # Start one or more service
 svc_start()
 {
+    local svc=
     for svc in $@; do
         exec_serv $svc start
     done
+    unset svc
 }
 export -f svc_start
 
@@ -46,9 +52,11 @@ export -f svc_start
 # Restart one or more services
 svc_restart()
 {
+    local svc=
     for svc in $@; do
         exec_serv $svc restart
     done
+    unset svc
 }
 export -f svc_restart
 
@@ -57,9 +65,11 @@ export -f svc_restart
 # Stop one or more services
 svc_stop()
 {
+    local svc=
     for svc in $@; do
-	exec_serv $svc stop
+        exec_serv $svc stop
     done
+    unset svc
 }
 export -f svc_stop