Add L10N comments to several unclear messages.

Updating Japanese translation, I found that some of the updated messages
were a little hard to understand without reading the code.

Add comments to some messages I nearly translated in a wrong way.

1 files changed, 5 insertions, 0 deletions

diff --git a/account.c b/account.c
index 9e7f9154..0cfea974 100644
--- a/account.c
+++ b/account.c
@@ -276,6 +276,11 @@ char* mutt_account_getoauthbearer (ACCOUNT* account)
 
   if (cmd == NULL)
   {
+    /* L10N: You will see this error message if (1) you have "oauthbearer" in
+       one of your $*_authenticators and (2) you do not have the corresponding
+       $*_oauth_refresh_command defined. So the message does not mean "None of
+       your $*_oauth_refresh_command's are defined."
+     */
     mutt_error (_("mutt_account_getoauthbearer: No OAUTH refresh command defined"));
     return NULL;
   }