fix: summon services requirement not to be ignored

Signed-off-by: Valentin Lab <valentin.lab@kalysto.org>

bin/compose-core

@@ -2462,7 +2462,7 @@ get_all_relations () {
                     optional+=("$service" "$relation_name" "$relation_def")
                     ;;
                 *)
-                    err "Invalid ${WHITE}constraint${NORMAL} value '$contraint'."
+                    err "Invalid ${WHITE}constraint${NORMAL} value '$constraint'."
                     return 1
                     ;;
             esac
@@ -2505,7 +2505,7 @@ get_all_relations () {
 
                 ## Adding service
                 [ "${services[$ts]}" ] && continue
-                array_read-0 new_services_uses < <(_get_services_uses "$ts")
+                array_read-0 services_uses < <(_get_services_uses "$ts")
                 services[$ts]=1
                 changed=1
             done