enable gocritic linter

The linter ensures a common code style.
- use switch/case instead of else if
- use if instead of switch/case for single case statement
- add space between comment and text
- detect the use of defer with os.Exit()
- use short form var += "..." instead of var = var + "..."
- detect problems with append()
```
newSlice := append(orgSlice, val)
```
  This could lead to nasty bugs because the orgSlice will be changed in
  place if it has enough capacity too hold the new elements. Thus we
  newSlice might not be a copy.

Of course most of the changes are just cosmetic and do not cause any
logic errors but I think it is a good idea to enforce a common style.
This should help maintainability.

Signed-off-by: Paul Holzinger <pholzing@redhat.com>

2 files changed, 7 insertions, 6 deletions

diff --git a/pkg/specgenutil/createparse.go b/pkg/specgenutil/createparse.go
index a51396227..fb5f9c351 100644
--- a/pkg/specgenutil/createparse.go
+++ b/pkg/specgenutil/createparse.go
@@ -24,11 +24,12 @@ func validate(c *entities.ContainerCreateOptions) error {
 		"ignore": "",
 	}
 	if _, ok := imageVolType[c.ImageVolume]; !ok {
-		if c.IsInfra {
+		switch {
+		case c.IsInfra:
 			c.ImageVolume = "bind"
-		} else if c.IsClone { // the image volume type will be deduced later from the container we are cloning
+		case c.IsClone: // the image volume type will be deduced later from the container we are cloning
 			return nil
-		} else {
+		default:
 			return errors.Errorf("invalid image-volume type %q. Pick one of bind, tmpfs, or ignore", c.ImageVolume)
 		}
 	}
diff --git a/pkg/specgenutil/specgen.go b/pkg/specgenutil/specgen.go
index f0dfcac1a..9cb2f200b 100644
--- a/pkg/specgenutil/specgen.go
+++ b/pkg/specgenutil/specgen.go
@@ -1098,9 +1098,9 @@ var cgroupDeviceType = map[string]bool{
 }
 
 var cgroupDeviceAccess = map[string]bool{
-	"r": true, //read
-	"w": true, //write
-	"m": true, //mknod
+	"r": true, // read
+	"w": true, // write
+	"m": true, // mknod
 }
 
 // parseLinuxResourcesDeviceAccess parses the raw string passed with the --device-access-add flag