getModuleDeps: replace Split() loop with ReplaceAllString() (MR 12)

This should do the same as far as I can tell :)

(cherry picked from commit 866f17b86f)

main.go

@@ -657,15 +657,8 @@ func getModuleDeps(modName string, modulesDep io.Reader) ([]string, error) {
 
 	// split the module name on - and/or _, build a regex for matching
 	splitRe := regexp.MustCompile("[-_]+")
-	var modNameReStr string
-	for _, s := range splitRe.Split(modName, -1) {
-		if modNameReStr != "" {
-			modNameReStr += "[-_]+" + s
-		} else {
-			modNameReStr = s
-		}
-	}
-	re := regexp.MustCompile(modNameReStr)
+	modNameReStr := splitRe.ReplaceAllString(modName, "[-_]+")
+	re := regexp.MustCompile("^" + modNameReStr + "$")
 
 	s := bufio.NewScanner(modulesDep)
 	for s.Scan() {

main_test.go

@@ -40,6 +40,7 @@ func stringSlicesEqual(a []string, b []string) bool {
 }
 
 var testModuleDep string = `
+kernel/sound/soc/codecs/snd-soc-msm8916-digital.ko:
 kernel/net/sched/act_ipt.ko.xz: kernel/net/netfilter/x_tables.ko.xz
 kernel/drivers/watchdog/watchdog.ko.xz:
 kernel/drivers/usb/serial/ir-usb.ko.xz: kernel/drivers/usb/serial/usbserial.ko.xz
@@ -53,6 +54,7 @@ kernel/net/bluetooth/hidp/hidp.ko.xz: kernel/net/bluetooth/bluetooth.ko.xz kerne
 kernel/fs/nls/nls_iso8859-1.ko.xz:
 kernel/net/vmw_vsock/vmw_vsock_virtio_transport.ko.xz: kernel/net/vmw_vsock/vmw_vsock_virtio_transport_common.ko.xz kernel/drivers/virtio/virtio.ko.xz kernel/drivers/virtio/virtio_ring.ko.xz kernel/net/vmw_vsock/vsock.ko.xz
 kernel/drivers/gpu/drm/panfrost/panfrost.ko.xz: kernel/drivers/gpu/drm/scheduler/gpu-sched.ko.xz
+kernel/drivers/gpu/drm/msm/msm.ko: kernel/drivers/gpu/drm/drm_kms_helper.ko
 `
 
 func TestGetModuleDeps(t *testing.T) {
@@ -65,6 +67,8 @@ func TestGetModuleDeps(t *testing.T) {
 		{"dw-wdt", []string{"kernel/drivers/watchdog/dw_wdt.ko.xz",
 			"kernel/drivers/watchdog/watchdog.ko.xz"}},
 		{"gl518sm", []string{"kernel/drivers/hwmon/gl518sm.ko.xz"}},
+		{"msm", []string{"kernel/drivers/gpu/drm/msm/msm.ko",
+			"kernel/drivers/gpu/drm/drm_kms_helper.ko"}},
 	}
 	for _, table := range tables {
 		out, err := getModuleDeps(table.in, strings.NewReader(testModuleDep))