mutt: Clean up sasl warnings.

[Brendan Cully]

changeset: 6408:282832c0329a
user:      Kevin McCarthy <ke...@8t8.us>
date:      Thu Jan 29 15:40:34 2015 -0800
link:      http://dev.mutt.org/hg/mutt/rev/282832c0329a

Clean up sasl warnings.

These were caused by assigning callback functions to the
sasl_callback_t.proc member.  The callback type doesn't list any
parameters, because parameters vary by callback.  The fix was simply
assigning a cast.

Cyrus-sasl2 has a sasl_callback_ft typedef that their sample code uses
for this purpose, but it is in a different header, saslplug.h, and
isn't in their 1.5 tree.  Since this is probably not portable to other
implementations, I just added an equivalent cast.

diffs (33 lines):

diff -r 73b97b986e0d -r 282832c0329a mutt_sasl.c
--- a/mutt_sasl.c       Tue Jan 27 16:15:31 2015 -0800
+++ b/mutt_sasl.c       Thu Jan 29 15:40:34 2015 -0800
@@ -142,7 +142,7 @@
 
   /* set up default logging callback */
   callbacks[0].id = SASL_CB_LOG;
-  callbacks[0].proc = mutt_sasl_cb_log;
+  callbacks[0].proc = (int (*)(void))mutt_sasl_cb_log;
   callbacks[0].context = NULL;
 
   callbacks[1].id = SASL_CB_LIST_END;
@@ -270,17 +270,17 @@
   callback = mutt_sasl_callbacks;
 
   callback->id = SASL_CB_USER;
-  callback->proc = mutt_sasl_cb_authname;
+  callback->proc = (int (*)(void))mutt_sasl_cb_authname;
   callback->context = account;
   callback++;
 
   callback->id = SASL_CB_AUTHNAME;
-  callback->proc = mutt_sasl_cb_authname;
+  callback->proc = (int (*)(void))mutt_sasl_cb_authname;
   callback->context = account;
   callback++;
 
   callback->id = SASL_CB_PASS;
-  callback->proc = mutt_sasl_cb_pass;
+  callback->proc = (int (*)(void))mutt_sasl_cb_pass;
   callback->context = account;
   callback++;