Fix instances where I used localizedDescription instead of errorDescription 🤦‍♀️

Author: designatednerd

Sources/Apollo/ApolloClient.swift

@@ -34,7 +34,7 @@ public class ApolloClient {
   public enum ApolloClientError: Error, LocalizedError {
     case noUploadTransport
 
-    public var localizedDescription: String {
+    public var errorDescription: String? {
       switch self {
       case .noUploadTransport:
         return "Attempting to upload using a transport which does not support uploads. This is a developer error."

Sources/Apollo/MultipartFormData.swift

@@ -6,7 +6,7 @@ public class MultipartFormData {
   enum FormDataError: Error, LocalizedError {
     case encodingStringToDataFailed(_ string: String)
 
-    var localizedDescription: String {
+    var errorDescription: String? {
       switch self {
       case .encodingStringToDataFailed(let string):
         return "Could not encode \"\(string)\" as .utf8 data."