fix: address code review findings (consolidate slice helpers, correct bootleg comment)

internal/musicbrainz/api.go

@@ -94,10 +94,9 @@ func FilterReleaseGroups(groups []ReleaseGroup, opts FilterOptions) []ReleaseGro
 	return filtered
 }
 
-// hasSecondaryType reports whether any of the release group's secondary types
-// matches one of the provided values.
-func hasSecondaryType(rg ReleaseGroup, wanted ...string) bool {
-	for _, s := range rg.SecondaryTypes {
+// hasSliceType reports whether the slice contains any of the wanted values.
+func hasSliceType(types []string, wanted ...string) bool {
+	for _, s := range types {
 		for _, w := range wanted {
 			if s == w {
 				return true
@@ -107,6 +106,12 @@ func hasSecondaryType(rg ReleaseGroup, wanted ...string) bool {
 	return false
 }
 
+// hasSecondaryType reports whether any of the release group's secondary types
+// matches one of the provided values.
+func hasSecondaryType(rg ReleaseGroup, wanted ...string) bool {
+	return hasSliceType(rg.SecondaryTypes, wanted...)
+}
+
 // IsTypeIncluded returns true if the given primary type is in the base
 // included set (Album/Single/EP).
 func IsTypeIncluded(releaseType string) bool {