vet: eliminate unnecessary shadowing

Running "go vet -shadow ./..." finds all places where a variable might
be incorrectly or unnecessarily shadowed. This fixes some of them.

1 files changed, 1 insertions, 1 deletions

diff --git a/pam/pam.go b/pam/pam.go
index 0f20f30..bd15c38 100644
--- a/pam/pam.go
+++ b/pam/pam.go
@@ -58,7 +58,7 @@ func NewHandle(pamh unsafe.Pointer) (*Handle, error) {
 
 	var pamUsername *C.char
 	h.status = C.pam_get_user(h.handle, &pamUsername, nil)
-	if err := h.err(); err != nil {
+	if err = h.err(); err != nil {
 		return nil, err
 	}