all: check for zero file on config save

If the file is not set, do nothing.

1 files changed, 4 insertions, 0 deletions

diff --git a/config.go b/config.go
index fbfcfe0..29a63e3 100644
--- a/config.go
+++ b/config.go
@@ -148,6 +148,10 @@ func (cfg *config) get(name string) (issuer *Issuer, err error) {
 
 // save the config to file.
 func (cfg *config) save() (err error) {
+	if len(cfg.file) == 0 {
+		return nil
+	}
+
 	var (
 		logp = `save`