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, 2 insertions, 2 deletions

diff --git a/libpod/networking_machine.go b/libpod/networking_machine.go
index 73089c474..7b8eb94df 100644
--- a/libpod/networking_machine.go
+++ b/libpod/networking_machine.go
@@ -33,9 +33,9 @@ type machineExpose struct {
 func requestMachinePorts(expose bool, ports []types.PortMapping) error {
 	url := "http://" + machineGvproxyEndpoint + "/services/forwarder/"
 	if expose {
-		url = url + "expose"
+		url += "expose"
 	} else {
-		url = url + "unexpose"
+		url += "unexpose"
 	}
 	ctx := context.Background()
 	client := &http.Client{