Add open_msg to struct mx_ops

Add the callback to open an existing message to struct mx_ops. For mbox,
mmdf, maildir, and mh, the code was implemented directly into
mx_open_message, so it is moved in their respective source files. For
imap and pop, there were already <mailbox>_fetch_message functions, but
their argument order has been changed to pass the context as a first
argument.

1 files changed, 2 insertions, 1 deletions

diff --git a/pop.c b/pop.c
index 4f0124ab..15c99792 100644
--- a/pop.c
+++ b/pop.c
@@ -512,7 +512,7 @@ int pop_close_mailbox (CONTEXT *ctx)
 }
 
 /* fetch message from POP server */
-int pop_fetch_message (MESSAGE* msg, CONTEXT* ctx, int msgno)
+static int pop_fetch_message (CONTEXT* ctx, MESSAGE* msg, int msgno)
 {
   int ret;
   void *uidl;
@@ -931,5 +931,6 @@ fail:
 struct mx_ops mx_pop_ops = {
   .open = pop_open_mailbox,
   .close = pop_close_mailbox,
+  .open_msg = pop_fetch_message,
   .check = pop_check_mailbox,
 };