opts: fix prealloc linting

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>

Author: thaJeztah

opts/gpus.go

@@ -105,7 +105,7 @@ func (*GpuOpts) Type() string {
 
 // String returns a string repr of this option
 func (o *GpuOpts) String() string {
-	gpus := []string{}
+	gpus := make([]string, 0, len(o.values))
 	for _, gpu := range o.values {
 		gpus = append(gpus, fmt.Sprintf("%v", gpu))
 	}

opts/mount.go

@@ -151,7 +151,7 @@ func (*MountOpt) Type() string {
 
 // String returns a string repr of this option
 func (m *MountOpt) String() string {
-	mounts := []string{}
+	mounts := make([]string, 0, len(m.values))
 	for _, mount := range m.values {
 		repr := fmt.Sprintf("%s %s %s", mount.Type, mount.Source, mount.Target)
 		mounts = append(mounts, repr)