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>

1 files changed, 1 insertions, 1 deletions

diff --git a/libpod/options.go b/libpod/options.go
index 4e597201a..57e2d7cf6 100644
--- a/libpod/options.go
+++ b/libpod/options.go
@@ -1662,7 +1662,7 @@ func WithTimezone(path string) CtrCreateOption {
 			if err != nil {
 				return err
 			}
-			//We don't want to mount a timezone directory
+			// We don't want to mount a timezone directory
 			if file.IsDir() {
 				return errors.New("Invalid timezone: is a directory")
 			}