Bug#17641586 INCORRECTLY PRINTED BINLOG DUMP INFORMATION

Problem:
When log_warnings is greater than 1, master prints binlog
dump thread information in mysqld.1.err file.
The information contains slave server id, binlog file and
binlog position. The slave server id is uint32 and the print
format was wrongly specifified (%d instead of %u).
Hence a server id which is more than 2 billion is getting
printed with a negative value.
Eg: Start binlog_dump to slave_server(-1340259414),
pos(mysql-bin.001663, 325187493)

Fix: Changed the uint32 format to %u.

sql/sql_repl.cc

@@ -476,7 +476,7 @@ void mysql_binlog_send(THD* thd, char* log_ident, my_off_t pos,
     set_timespec_nsec(*heartbeat_ts, 0);
   }
   if (global_system_variables.log_warnings > 1)
-    sql_print_information("Start binlog_dump to slave_server(%d), pos(%s, %lu)",
+    sql_print_information("Start binlog_dump to slave_server(%u), pos(%s, %lu)",
                         thd->server_id, log_ident, (ulong)pos);
   if (RUN_HOOK(binlog_transmit, transmit_start, (thd, flags, log_ident, pos)))
   {