imap-hibernate: Increased imap-master communication timeout from 5s t…

…o 30s

Looks like 5s isn't enough in loaded environments. It's also not really a
problem if the timeout is large, it's just going to take a while longer to
restore the connection. When timeout is reached the client would just get
disconnected anyway.

src/imap-hibernate/imap-master-connection.c

@@ -5,7 +5,7 @@
 #include "connection.h"
 #include "imap-master-connection.h"
 
-#define IMAP_MASTER_CONNECTION_TIMEOUT_MSECS 5000
+#define IMAP_MASTER_CONNECTION_TIMEOUT_MSECS 30000
 
 struct imap_master_connection {
 	struct connection conn;