Modlog Converter: Default to 0 if no time is found
Modlog Converter: Default to 0 if no time is found

This makes it clearer that no time was found, since PS didn't exist in 1970.

svivian/Pokemon-Showdown,xfix/Pokemon-Showdown,xfix/Pokemon-Showdown,xfix/Pokemon-Showdown,xfix/Pokemon-Showdown,svivian/Pokemon-Showdown,xfix/Pokemon-Showdown,Zarel/Pokemon-Showdown,svivian/Pokemon-Showdown,Zarel/Pokemon-Showdown,svivian/Pokemon-Showdown,Zarel/Pokemon-Showdown,svivian/Pokemon-Showdown