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/cmd/podman/completion/completion.go b/cmd/podman/completion/completion.go
index b02a0d772..6f185cde8 100644
--- a/cmd/podman/completion/completion.go
+++ b/cmd/podman/completion/completion.go
@@ -31,7 +31,7 @@ var (
 		Example: `podman completion bash
   podman completion zsh -f _podman
   podman completion fish --no-desc`,
-		//don't show this command to users
+		// don't show this command to users
 		Hidden: true,
 	}
 )