When a time delta is a float, the minutes and seconds can produce a weird
output between 0.5 and 0.9 with strings like 1m60s. Just forcing a cast
to an integer, the bug is solved.
Signed-off-by: Sergi Blanch Torne <sergi.blanch.torne@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/39134>