chore: fix golint errors

Author: andyzhangx

pkg/nfs/controllerserver.go

@@ -800,7 +800,7 @@ func getNfsVolFromID(id string) (*nfsVolume, error) {
 		// try with separator "/"
 		volRegex := regexp.MustCompile("^([^/]+)/(.*)/([^/]+)$")
 		tokens := volRegex.FindStringSubmatch(id)
-		if tokens == nil || len(tokens) < 4 {
+		if len(tokens) < 4 {
 			return nil, fmt.Errorf("could not split %s into server, baseDir and subDir with separator(%s)", id, "/")
 		}
 		server = tokens[1]

pkg/nfs/utils.go

@@ -67,21 +67,21 @@ func NewControllerServer(d *Driver) *ControllerServer {
 	}
 }
 
-func NewControllerServiceCapability(cap csi.ControllerServiceCapability_RPC_Type) *csi.ControllerServiceCapability {
+func NewControllerServiceCapability(c csi.ControllerServiceCapability_RPC_Type) *csi.ControllerServiceCapability {
 	return &csi.ControllerServiceCapability{
 		Type: &csi.ControllerServiceCapability_Rpc{
 			Rpc: &csi.ControllerServiceCapability_RPC{
-				Type: cap,
+				Type: c,
 			},
 		},
 	}
 }
 
-func NewNodeServiceCapability(cap csi.NodeServiceCapability_RPC_Type) *csi.NodeServiceCapability {
+func NewNodeServiceCapability(c csi.NodeServiceCapability_RPC_Type) *csi.NodeServiceCapability {
 	return &csi.NodeServiceCapability{
 		Type: &csi.NodeServiceCapability_Rpc{
 			Rpc: &csi.NodeServiceCapability_RPC{
-				Type: cap,
+				Type: c,
 			},
 		},
 	}