Fixed compiler error and some warnings on windows

extra/perror.c

@@ -250,7 +250,7 @@ static my_bool print_win_error_msg(DWORD error, my_bool verbose)
     will ignore calls to register already registered error numbers.
 */
 
-static const char **get_handler_error_messages()
+static const char **get_handler_error_messages(void)
 {
   return handler_error_messages;
 }

mysys/my_error.c

@@ -217,7 +217,7 @@ void my_message(uint error, const char *str, register myf MyFlags)
   @retval  != 0     Error
 */
 
-int my_error_register(const char** (*get_errmsgs) (), uint first, uint last)
+int my_error_register(const char** (*get_errmsgs) (void), uint first, uint last)
 {
   struct my_err_head *meh_p;
   struct my_err_head **search_meh_pp;

sql-common/my_time.c

@@ -224,7 +224,7 @@ my_bool check_datetime_range(const MYSQL_TIME *ltime)
     ltime->minute > 59 || ltime->second > 59 ||
     ltime->second_part > TIME_MAX_SECOND_PART ||
     (ltime->hour >
-     (ltime->time_type == MYSQL_TIMESTAMP_TIME ? TIME_MAX_HOUR : 23));
+     (uint) (ltime->time_type == MYSQL_TIMESTAMP_TIME ? TIME_MAX_HOUR : 23));
 }
 
 
@@ -237,7 +237,7 @@ static void get_microseconds(ulong *val, MYSQL_TIME_STATUS *status,
   if (get_digits(&tmp, number_of_fields, str, end, 6))
     status->warnings|= MYSQL_TIME_WARN_TRUNCATED;
   if ((status->precision= (*str - start)) < 6)
-    *val= tmp * log_10_int[6 - (*str - start)];
+    *val= (ulong) (tmp * log_10_int[6 - (*str - start)]);
   else
     *val= tmp;
   if (skip_digits(str, end))

sql/derror.cc

@@ -35,7 +35,7 @@ static void init_myfunc_errs(void);
 
 
 C_MODE_START
-static const char **get_server_errmsgs()
+static const char **get_server_errmsgs(void)
 {
   if (!current_thd)
     return DEFAULT_ERRMSGS;

sql/handler.cc

@@ -284,7 +284,7 @@ handler *get_ha_partition(partition_info *part_info)
 static const char **handler_errmsgs;
 
 C_MODE_START
-static const char **get_handler_errmsgs()
+static const char **get_handler_errmsgs(void)
 {
   return handler_errmsgs;
 }

sql/net_serv.cc

@@ -831,7 +831,7 @@ my_real_read(NET *net, size_t *complen,
   size_t length;
   uint i,retry_count=0;
   ulong len=packet_error;
-  my_bool expect_error_packet __attribute((unused))= 0;
+  my_bool expect_error_packet __attribute__((unused))= 0;
   thr_alarm_t alarmed;
 #ifndef NO_ALARM
   ALARM alarm_buff;