Add golangci configuration

.golangci.yml

@@ -0,0 +1,30 @@
+run:
+  deadline: 5m
+
+linters:
+  disable-all: true
+  enable:
+  - dupl
+  - goconst
+  - gocyclo
+  - gofmt
+  - golint
+  - govet
+  - ineffassign
+  - interfacer
+  - lll
+  - misspell
+  - nakedret
+  - structcheck
+  - unparam
+  - varcheck
+
+linters-settings:
+  dupl:
+    threshold: 400
+  lll:
+    line-length: 170
+  gocyclo:
+    min-complexity: 15
+  golint:
+    min-confidence: 0.85

internal/check/valid_owner.go

@@ -191,11 +191,8 @@ func (v *ValidOwnerChecker) initOrgListMembers(ctx context.Context) error {
 
 func isEmailAddress(s string) bool {
 	_, err := mail.ParseAddress(s)
-	if err != nil {
-		return false
-	}
 
-	return true
+	return err == nil
 }
 
 func isGithubTeam(s string) bool {