Bug: Agenda fails to parse time interval like 23:00-29:00 [9.1.9 (release_9.1.9-65-g5e4542 @ /home/yantar92/.emacs.d/straight/build/org/)]

['Ihor Radchenko']

I have one scheduled item like the following:

* test
<2019-12-05 Thu 23:00-29:00>

This kind of item fails to be parsed by agenda because of incorrect
treatment of 23:00-29:00 time interval

Specifically, calling
(org-agenda-format-item nil #("test" 0 3 (face org-level-1 org-category
"schedule" fontified t)) " " "schedule" nil #("<2019-12-02 Mon 23:00-29:00>" 
... ) ...)

yields (org-get-time-of-day "29:00" 'string t) -> "+5:00", which is then
passed to (org-duration-to-minutes "+5:00"), resulting in error. 

Regards,
Ihor


Emacs  : GNU Emacs 27.0.50 (build 1, x86_64-pc-linux-gnu, X toolkit, cairo 
version 1.16.0)
 of 2019-11-25
Package: Org mode version 9.1.9 (release_9.1.9-65-g5e4542 @ 
/home/yantar92/.emacs.d/straight/build/org/)