Use IsProd instead of testing if it's equal. (#14336)

Co-authored-by: 6543 <6543@obermui.de>
Co-authored-by: zeripath <art27@cantab.net>

modules/auth/sso/sspi_windows.go

@@ -56,7 +56,7 @@ func (s *SSPI) Init() error {
 		Funcs:         templates.NewFuncMap(),
 		Asset:         templates.GetAsset,
 		AssetNames:    templates.GetAssetNames,
-		IsDevelopment: setting.RunMode != "prod",
+		IsDevelopment: !setting.IsProd(),
 	})
 	return nil
 }

modules/httpcache/httpcache.go

@@ -17,7 +17,7 @@ import (
 
 // GetCacheControl returns a suitable "Cache-Control" header value
 func GetCacheControl() string {
-	if setting.RunMode == "dev" {
+	if !setting.IsProd() {
 		return "no-store"
 	}
 	return "private, max-age=" + strconv.FormatInt(int64(setting.StaticCacheTime.Seconds()), 10)

modules/setting/setting.go

@@ -376,7 +376,6 @@ var (
 	CustomConf    string
 	PIDFile       = "/run/gitea.pid"
 	WritePIDFile  bool
-	ProdMode      bool
 	RunMode       string
 	RunUser       string
 	IsWindows     bool
@@ -388,6 +387,11 @@ var (
 	UILocation = time.Local
 )
 
+// IsProd if it's a production mode
+func IsProd() bool {
+	return strings.EqualFold(RunMode, "prod")
+}
+
 func getAppPath() (string, error) {
 	var appPath string
 	var err error