Fix spaces in list unsubscribe

app/src/main/java/eu/faircode/email/FragmentDialogUnsubscribe.java

@@ -87,6 +87,7 @@ public class FragmentDialogUnsubscribe extends FragmentDialogBase {
                     protected String onExecute(Context context, Bundle args) throws Throwable {
                         final String uri = args.getString("uri");
                         final String request = "List-Unsubscribe=One-Click";
+                        Log.i("Unsubscribe request=" + request + " uri=" + uri);
 
                         // https://datatracker.ietf.org/doc/html/rfc8058
 
@@ -108,10 +109,12 @@ public class FragmentDialogUnsubscribe extends FragmentDialogBase {
                             int status = connection.getResponseCode();
                             if (status < 200 || status > 299) {
                                 String error = "Error " + status + ": " + connection.getResponseMessage();
+                                Log.i("Unsubscribe error=" + error);
                                 InputStream stream = connection.getErrorStream();
-                                String detail = (stream == null ? null : Helper.readStream(stream));
+                                String detail = (stream == null || status == 404 ? null : Helper.readStream(stream));
                                 throw new IOException(error + " " + detail);
-                            }
+                            } else
+                                Log.i("Unsubscribe status=" + status);
 
                             return Helper.readStream(connection.getInputStream());
                         } finally {

app/src/main/java/eu/faircode/email/MessageHelper.java

@@ -2975,6 +2975,7 @@ public class MessageHelper {
 
             list = MimeUtility.unfold(list);
             list = decodeMime(list);
+            list = list.replaceAll("\\s+", "");
 
             if (list == null || list.startsWith("NO"))
                 return null;
@@ -2985,6 +2986,7 @@ public class MessageHelper {
             if (post != null) {
                 post = MimeUtility.unfold(post);
                 post = decodeMime(post);
+                post = post.replaceAll("\\s+", "");
                 oneclick = "List-Unsubscribe=One-Click".equalsIgnoreCase(post.trim());
             }