Improve error message

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

@@ -1064,7 +1064,7 @@ public class FragmentCompose extends FragmentEx {
                     if (aid < 0) {
                         result.account = db.account().getPrimaryAccount();
                         if (result.account == null)
-                            throw new IllegalArgumentException(context.getString(R.string.title_no_account));
+                            throw new IllegalArgumentException(context.getString(R.string.title_no_primary_drafts));
                     } else
                         result.account = db.account().getAccount(aid);
                 } else {
@@ -1815,4 +1815,4 @@ public class FragmentCompose extends FragmentEx {
             return true;
         }
     };
-}
+}