unset XDG_HOME_CONFIG as gitea manages configuration locations

adding error check to manage lint

Author: eeyrjmr

Diff for: cmd/main.go

@@ -165,6 +165,11 @@ func NewMainApp(appVer AppVersion) *cli.App {
 	app.Commands = append(app.Commands, subCmdWithConfig...)
 	app.Commands = append(app.Commands, subCmdStandalone...)
 
+	err := os.Unsetenv("XDG_CONFIG_HOME") // unset if set as HOME is managed by gitea
+	if err != nil {
+		fmt.Printf("error unsetting XDG_CONFIG_HOME")
+	}
+
 	return app
 }