fix some minor lint errors

DcCore/DcCore/Helper/DcColors.swift

@@ -22,7 +22,8 @@ public struct DcColors {
                                                      dark: UIColor(red: 0.4, green: 0.4, blue: 0.4, alpha: 1))
     public static let providerPreparationBackground = UIColor.themeColor(lightHex: "#fffdf7b2", darkHex: "##fffdf7b2")
     public static let providerBrokenBackground = UIColor.themeColor(light: SystemColor.red.uiColor, dark: SystemColor.red.uiColor)
-    public static let systemMessageBackgroundColor = UIColor.themeColor(light: UIColor.rgb(red: 248, green: 248, blue: 248), dark: UIColor(white: 0.2, alpha: 0.5))
+    public static let systemMessageBackgroundColor = UIColor.themeColor(light: UIColor.rgb(red: 248, green: 248, blue: 248),
+                                                                        dark: UIColor(white: 0.2, alpha: 0.5))
     public static let deaddropBackground = UIColor.themeColor(light: UIColor.init(hexString: "ebebec"), dark: UIColor.init(hexString: "1a1a1c"))
 }
 

deltachat-ios/Controller/QrViewController.swift

@@ -36,7 +36,7 @@ class QrViewController: UIViewController {
         fatalError("init(coder:) has not been implemented")
     }
 
-    // MARK:  - lifecycle
+    // MARK: - lifecycle
     override func viewDidLoad() {
         super.viewDidLoad()
         title = String.localized("qr_code")

deltachat-ios/View/EmptyStateLabel.swift

@@ -38,4 +38,3 @@ class EmptyStateLabel: FlexLabel {
         fatalError("init(coder:) has not been implemented")
     }
 }
-