fix: dev: ``exit`` and ``return`` corrections !minor

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

bin/compose-core

@@ -3057,7 +3057,7 @@ _get_master_service_for_service_cached () {
     fi
 
     ## Action provided by relation ?
-    container_relation=$(_get_container_relation "$metadata") || exit 1
+    container_relation=$(_get_container_relation "$metadata") || return 1
     read-0 target_service _ _ < <(get_service_relation "$service" "$container_relation")
     if [ -z "$target_service" ]; then
         err "Couldn't find ${WHITE}relations.${container_relation}${NORMAL} in" \
@@ -3298,7 +3298,7 @@ switch_to_relation_service() {
     ## XXXvlab: can't get real config here
     if ! read-0 ts _ _ < <(get_service_relation "$SERVICE_NAME" "$relation"); then
         err "Couldn't find relation ${DARKCYAN}$relation${NORMAL}."
-        exit 1
+        return 1
     fi
 
     export SERVICE_NAME="$ts"
@@ -3306,8 +3306,8 @@ switch_to_relation_service() {
     DOCKER_BASE_IMAGE=$(service_base_docker_image "$SERVICE_NAME")
     export DOCKER_BASE_IMAGE
 
-    target_charm=$(get_service_charm "$ts") || exit 1
-    target_charm_path=$(charm.get_dir "$target_charm") || exit 1
+    target_charm=$(get_service_charm "$ts") || return 1
+    target_charm_path=$(charm.get_dir "$target_charm") || return 1
 
     cd "$target_charm_path"
 
@@ -3531,7 +3531,7 @@ get_compose_yml_content() {
     fi
 
     if [ -z "$COMPOSE_YML_FILE" ]; then
-        COMPOSE_YML_FILE=$(get_compose_yml_location) || exit 1
+        COMPOSE_YML_FILE=$(get_compose_yml_location) || return 1
     fi
     if [ -e "$COMPOSE_YML_FILE" ]; then
         debug "Found $WHITE$exname$NORMAL YAML file in '$COMPOSE_YML_FILE'."
@@ -4322,7 +4322,7 @@ if [ -z "$is_docker_compose_action" -a "$action" ]; then
             esac
         } < <(has_service_action "$action_service" "$action")
         services_args=("$action_service")
-        get_all_relations "${services_args[@]}" >/dev/null 2>&1 || return 1
+        get_all_relations "${services_args[@]}" >/dev/null 2>&1 || exit 1
 
         ## Divert logging to stdout to stderr
         log () { cat >&2; }