calcurse: patch DST date change issue

fixes #13990

srcpkgs/calcurse/patches/DST-fix-date-change.patch

@@ -0,0 +1,34 @@
+From d6fd07785fe8072e6bbadc173e9d6a2e73efdcdd Mon Sep 17 00:00:00 2001
+From: Lars Henriksen <LarsHenriksen@get2net.dk>
+Date: Thu, 1 Aug 2019 07:19:14 +0200
+Subject: DST: fix date_change() thoroughly
+
+Explicit setting of Daylight Saving Time should be avoided before as well as
+after the mktime() call.
+
+Signed-off-by: Lars Henriksen <LarsHenriksen@get2net.dk>
+Signed-off-by: Lukas Fleischer <lfleischer@calcurse.org>
+---
+ src/utils.c | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+diff --git a/src/utils.c b/src/utils.c
+index 8a8de75..a9a9e68 100644
+--- src/utils.c
++++ src/utils.c
+@@ -525,10 +525,11 @@ int date_change(struct tm *date, int delta_month, int delta_day)
+ 	t = *date;
+ 	t.tm_mon += delta_month;
+ 	t.tm_mday += delta_day;
+-
++	t.tm_isdst = -1;
+ 	if (mktime(&t) == -1) {
+ 		return 1;
+ 	} else {
++		t.tm_isdst = -1;
+ 		*date = t;
+ 		return 0;
+ 	}
+-- 
+cgit v1.2.1
+

srcpkgs/calcurse/template

@@ -1,7 +1,7 @@
 # Template file for 'calcurse'
 pkgname=calcurse
 version=4.5.0
-revision=1
+revision=2
 build_style=gnu-configure
 makedepends="ncurses-devel"
 depends="python3-httplib2"