[Dovecot] patch for 2.0.alpha3 crash

[Mike Abbott]

Dovecot-2.0.alpha3 crashes on startup for me on Mac OS X.  It hits a segmentation fault at:

0   libdovecot.0.dylib                  0x0000000100025e9f master_service_set_die_with_master + 10
1   libdovecot.0.dylib                  0x0000000100025d93 master_service_settings_read + 1818
2   libdovecot.0.dylib                  0x0000000100025e63 master_service_settings_read_simple + 110
3   dovecot                             0x00000001000021d3 main + 846
4   dovecot                             0x0000000100001650 start + 52

This appears to be because lib-master's master_service global (in the libdovecot shared library) is different from master's master_service global (in the dovecot binary).  Here's a patch to fix it:

--- a/src/master/main.c	2009-11-09 19:53:11.000000000 -0600
+++ b/src/master/main.c	2009-11-11 14:12:55.000000000 -0600
@@ -35,7 +35,6 @@
 #define MASTER_PID_FILE_NAME "master.pid"
 #define SERVICE_TIME_MOVED_BACKWARDS_MAX_THROTTLE_SECS (60*3)
 
-struct master_service *master_service;
 uid_t master_uid;
 gid_t master_gid;
 bool core_dumps_disabled;