fix warnings

ShhShell/Keys/KeyManager.swift

@@ -61,7 +61,7 @@ class KeyManager: ObservableObject {
 		}
 		print(privateKey)
 		
-		print(SecKeyCopyPublicKey(privateKey))
+		print(SecKeyCopyPublicKey(privateKey) ?? "")
 //		do {
 //			try storeKey(privateKey, label: label)
 //		} catch {

ShhShell/Keys/KeychainLayer.swift

@@ -89,12 +89,14 @@ kSecUseDataProtectionKeychain: true,
 	switch SecItemCopyMatching(query as CFDictionary, &item) {
 	case errSecSuccess: secKey = item as! SecKey
 	case errSecItemNotFound: return nil
-	case let status: throw KeyStoreError.KeyStoreError("keychain read failed")
+	case let status:
+		print(status)
+		throw KeyStoreError.KeyStoreError("keychain read failed")
 	}
 //	return secKey
 	
 	var error: Unmanaged<CFError>?
-	guard let data = SecKeyCopyExternalRepresentation(secKey, &error) as Data? else {
+	guard (SecKeyCopyExternalRepresentation(secKey, &error) as Data?) != nil else {
 		throw KeyStoreError.KeyStoreError(error.debugDescription)
 	}
 //	let key = try T(x963Representation: data)

ShhShell/Views/ConnectionView.swift

@@ -110,7 +110,7 @@ struct ConnectionView: View {
 								}
 								defer { fileURL.stopAccessingSecurityScopedResource() }
 								privkey = try? Data(contentsOf: fileURL)
-								print(privkey)
+								print(privkey ?? "")
 								print(fileURL)
 							} catch {
 								print(error.localizedDescription)