refactor: only handle error if security command not found

internal/decrypter/decrypter.go

@@ -14,10 +14,9 @@ import (
 )
 
 var (
-	errSecurityKeyIsEmpty = errors.New("input [security find-generic-password -wa 'Chrome'] in terminal")
+	errPasswordIsEmpty  = errors.New("password is empty")
-	errPasswordIsEmpty    = errors.New("password is empty")
+	errDecodeASN1Failed = errors.New("decode ASN1 data failed")
-	errDecodeASN1Failed   = errors.New("decode ASN1 data failed")
+	errEncryptedLength  = errors.New("length of encrypted password less than block size")
-	errEncryptedLength    = errors.New("length of encrypted password less than block size")
 )
 
 type ASN1PBE interface {

internal/decrypter/decrypter_darwin.go

@@ -1,5 +1,9 @@
 package decrypter
 
+var (
+	errSecurityKeyIsEmpty = errors.New("input [security find-generic-password -wa 'Chrome'] in terminal")
+)
+
 func Chromium(key, encryptPass []byte) ([]byte, error) {
 	if len(encryptPass) <= 3 {
 		return nil, errPasswordIsEmpty