CHICAGO — The Chicago Cubs will have to wait another day to try to end their seven-game losing streak. Their game Friday against the New York Mets, scheduled for 1:20 p.m., was postponed because of inclement weather and has been rescheduled for 7:05 p.m. Saturday as part of a split doubleheader. Separate tickets are required for each game. Gates for the make-up game will open about 60 minutes before first pitch. Right-hander Marcus Stroman, originally slated to take the mound Friday, will start Game 1 Saturday against the Mets, followed by left-hander Drew Smyly for Game 2. The Cubs (34-55) ar…