Get last return value

src/freedombone-app-gnusocial

             if [ ${#temp_background} -gt 0 ]; then
                 GNUSOCIAL_BACKGROUND_IMAGE_URL="$temp_background"
                 write_config_param "GNUSOCIAL_BACKGROUND_IMAGE_URL" "$GNUSOCIAL_BACKGROUND_IMAGE_URL"
-                if [[ $(pleroma_set_background_image_from_url "$GNUSOCIAL_DOMAIN_NAME" "$GNUSOCIAL_BACKGROUND_IMAGE_URL" "$GNUSOCIAL_TITLE") == "0" ]]; then
+                if [[ $(pleroma_set_background_image_from_url "$GNUSOCIAL_DOMAIN_NAME" "$GNUSOCIAL_BACKGROUND_IMAGE_URL" "$GNUSOCIAL_TITLE" | tail -n 1) == "0" ]]; then
                     dialog --title $"Set GNU Social login background" \
                            --msgbox $"The background image has been set" 6 60
                 fi