time: fix timezone

vlib/time/time.v

@@ -252,7 +252,7 @@ pub fn (t &Time) calc_unix() int {
 		tm_mon: t.month - 1
 		tm_year: t.year - 1900
 	}
-	return C.mktime(&tt)
+	return make_unix_time(tt)
 }
 
 // TODO add(d time.Duration)

vlib/time/time_nix.v

@@ -21,9 +21,11 @@ pub fn convert_ctime(t tm) Time {
 		hour: t.tm_hour
 		minute: t.tm_min
 		second: t.tm_sec
-		unix: C.mktime(&t)
-	}.add_seconds(t.tm_gmtoff)
+		unix: make_unix_time(t)
+	}
 }
 
-
-
+[inline]
+fn make_unix_time(t tm) int {
+	return C.mktime(&t) + t.tm_gmtoff
+}

vlib/time/time_test.v

@@ -179,6 +179,7 @@ fn test_add_days() {
 	num_of_days := 3
 	t := time_to_test.add_days(num_of_days)
 	assert t.day == time_to_test.day + num_of_days
+	assert t.unix == time_to_test.unix + 86400 * num_of_days
 }
 
 fn test_get_fmt_time_str() {

vlib/time/time_windows.v

@@ -10,7 +10,6 @@ struct C.tm {
 	tm_hour int
 	tm_min  int
 	tm_sec  int
-	//tm_gmtoff int // seconds
 }
 
 pub fn convert_ctime(t tm) Time {
@@ -21,7 +20,11 @@ pub fn convert_ctime(t tm) Time {
 		hour: t.tm_hour
 		minute: t.tm_min
 		second: t.tm_sec
-		unix: C.mktime(&t)
-	}//.add_seconds(t.tm_gmtoff)
+		unix: make_unix_time(t)
+	}
 }
 
+[inline]
+fn make_unix_time(t tm) int {
+	return C.mktime(&t) - C._timezone
+}