zfs: move common init function out of arch-specific files

Signed-off-by: Daniel Swarbrick <daniel.swarbrick@gmail.com>

collector/zfs.go

@@ -15,3 +15,7 @@
 // +build !nozfs
 
 package collector
+
+func init() {
+	registerCollector("zfs", defaultEnabled, NewZFSCollector)
+}

collector/zfs_freebsd.go

@@ -30,10 +30,6 @@ const (
 	zfsCollectorSubsystem = "zfs"
 )
 
-func init() {
-	registerCollector("zfs", defaultEnabled, NewZfsCollector)
-}
-
 func NewZfsCollector(logger *slog.Logger) (Collector, error) {
 	return &zfsCollector{
 		sysctls: []bsdSysctl{

collector/zfs_linux.go

@@ -58,10 +58,6 @@ type zfsCollector struct {
 	logger               *slog.Logger
 }
 
-func init() {
-	registerCollector("zfs", defaultEnabled, NewZFSCollector)
-}
-
 // NewZFSCollector returns a new Collector exposing ZFS statistics.
 func NewZFSCollector(logger *slog.Logger) (Collector, error) {
 	return &zfsCollector{

collector/zfs_solaris.go

@@ -61,10 +61,6 @@ const (
 	zfsCollectorSubsystem = "zfs"
 )
 
-func init() {
-	registerCollector("zfs", defaultEnabled, NewZfsCollector)
-}
-
 func NewZfsCollector(logger *slog.Logger) (Collector, error) {
 	return &zfsCollector{
 		abdstatsLinearCount: prometheus.NewDesc(