Cleanup code of error handling

pass/Controllers/GitServerSettingTableViewController.swift

@@ -230,10 +230,14 @@ class GitServerSettingTableViewController: UITableViewController {
             // might keys updated via iTunes, or downloaded/pasted inside the app
             fileActionTitle.append(" (Import)")
             let fileAction = UIAlertAction(title: fileActionTitle, style: .default) { _ in
-                self.passwordStore.gitSSHKeyImportFromFileSharing()
-                SharedDefaults[.gitSSHKeySource] = "file"
-                SVProgressHUD.showSuccess(withStatus: "Imported")
-                SVProgressHUD.dismiss(withDelay: 1)
+                do {
+                    try self.passwordStore.gitSSHKeyImportFromFileSharing()
+                    SharedDefaults[.gitSSHKeySource] = "file"
+                    SVProgressHUD.showSuccess(withStatus: "Imported")
+                    SVProgressHUD.dismiss(withDelay: 1)
+                } catch {
+                    Utils.alert(title: "Error", message: error.localizedDescription, controller: self, completion: nil)
+                }
             }
             optionMenu.addAction(fileAction)
         } else {

pass/Controllers/PasswordsViewController.swift

@@ -410,7 +410,6 @@ class PasswordsViewController: UIViewController, UITableViewDataSource, UITableV
                     SVProgressHUD.dismiss(withDelay: 0.6)
                 }
             } catch {
-                print(error)
                 DispatchQueue.main.async {
                     // remove the wrong passphrase so that users could enter it next time
                     self.passwordStore.pgpKeyPassphrase = nil

pass/Controllers/QRScannerController.swift

@@ -80,9 +80,7 @@ class QRScannerController: UIViewController, AVCaptureMetadataOutputObjectsDeleg
             }
             
         } catch {
-            print(error)
             scannerOutput.text = error.localizedDescription
-            return
         }
     }
     

pass/Controllers/SettingsTableViewController.swift

@@ -91,9 +91,9 @@ class SettingsTableViewController: UITableViewController, UITabBarControllerDele
         SVProgressHUD.setDefaultMaskType(.black)
         SVProgressHUD.setDefaultStyle(.light)
         SVProgressHUD.show(withStatus: "Fetching PGP Key")
-        passwordStore.pgpKeyImportFromFileSharing()
         DispatchQueue.global(qos: .userInitiated).async { [unowned self] in
             do {
+                try self.passwordStore.pgpKeyImportFromFileSharing()
                 try self.passwordStore.initPGPKeys()
                 DispatchQueue.main.async {
                     self.pgpKeyTableViewCell.detailTextLabel?.text = self.passwordStore.pgpKeyID