Prevent crash

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

@@ -95,19 +95,13 @@ public class ActivityCompose extends ActivityBase implements FragmentManager.OnB
                 // https://www.ietf.org/rfc/rfc2368.txt
                 MailTo mailto = MailTo.parse(uri.toString());
 
-                String _to = mailto.getTo();
-                if (_to != null) {
-                    List<String> to = sanitize(new String[]{_to});
-                    if (to.size() == 1)
-                        args.putString("to", to.get(0));
-                }
+                List<String> to = sanitize(new String[]{mailto.getTo()});
+                if (to.size() == 1)
+                    args.putString("to", to.get(0));
 
-                String _cc = mailto.getCc();
-                if (_cc != null) {
-                    List<String> cc = sanitize(new String[]{_cc});
-                    if (cc.size() == 1)
-                        args.putString("cc", cc.get(0));
-                }
+                List<String> cc = sanitize(new String[]{mailto.getCc()});
+                if (cc.size() == 1)
+                    args.putString("cc", cc.get(0));
 
                 String subject = mailto.getSubject();
                 if (subject != null)
@@ -220,6 +214,8 @@ public class ActivityCompose extends ActivityBase implements FragmentManager.OnB
         List<String> result = new ArrayList<>();
         if (addresses != null)
             for (String address : addresses) {
+                if (!TextUtils.isEmpty(address))
+                    continue;
                 address = address.replaceAll("\\s+", "");
                 address = address.replaceAll("\u200b", ""); // Discord: zero width space
                 if (!TextUtils.isEmpty(address))