Explicitly initialize instances of tf2::Duration

[mjcarroll]

This should resolve test failures in Windows debug builds.

tf2::Duration is a type alias of std::chrono::nanoseconds, which has a default-ed constructor, which does not guarantee that the value will be initialized to zero. This explicitly initializes all of the instances of tf2::Duration.

Signed-off-by: Michael Carroll michael@openrobotics.org

[mjcarroll]

• Windows Release:
• Windows Debug:

[mjcarroll]

As a follow-up, we may want to do something to warn people trying to use this undefined behavior as it can produce really subtle bugs.

[clalancette]

As a follow-up, we may want to do something to warn people trying to use this undefined behavior as it can produce really subtle bugs.

I'm not sure of all of the implications, but could we make tf2::Duration its own class that either derives from or has-a std::chrono::nanoseconds? That way we could always do the initialization to at least zero.