Workaround wrongly encoded headers

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

@@ -34,6 +34,7 @@ import java.io.FileReader;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.OutputStream;
+import java.io.UnsupportedEncodingException;
 import java.nio.charset.Charset;
 import java.nio.charset.StandardCharsets;
 import java.util.ArrayList;
@@ -475,7 +476,22 @@ public class MessageHelper {
             return null;
 
         header = new String(header.getBytes(StandardCharsets.ISO_8859_1));
-        return InternetAddress.parseHeader(header, false);
+        Address[] addresses = InternetAddress.parseHeader(header, false);
+
+        for (Address address : addresses) {
+            InternetAddress iaddress = (InternetAddress) address;
+            iaddress.setAddress(decodeMime(iaddress.getAddress()));
+            String personal = iaddress.getPersonal();
+            if (personal != null) {
+                try {
+                    iaddress.setPersonal(decodeMime(personal));
+                } catch (UnsupportedEncodingException ex) {
+                    Log.w(ex);
+                }
+            }
+        }
+
+        return addresses;
     }
 
     Address[] getFrom() throws MessagingException {