Fix workability with empty -hashes

diff --git a/internal/hasher.go b/internal/hasher.go
index 8de588fec17f592f0046a19d6bb711dd2220ca89..db2b912f628b97ffd7937fa278b1b15c409372be 100644 (file)
--- a/internal/hasher.go
+++ b/internal/hasher.go
@@ -33,6 +33,9 @@ type Hasher struct {
 func NewHasher(hashes string) (*Hasher, error) {
        h := Hasher{}
        for hc := range strings.SplitSeq(hashes, ",") {
+               if hc == "" {
+                       continue
+               }
                cols := strings.SplitN(hc, ":", 2)
                name, cmdline := cols[0], cols[1]
                if cmdline == BuiltinCmd {