By Martin Baccardax Azure revenues were flat to last quarter, Microsoft’s Q3 earnings indicated, adding a cloud of doubt to its modestly better-than-expected top and bottom lines. Microsoft Corp (MSFT) – Get Microsoft Corporation Report posted modestly better-than-expected third quarter earnings Tuesday but noted flat revenue growth in its key cloud division, keeping share gains muted in after-hours trading. Microsoft said revenues for Azure, its flagship cloud division, rose 46% from last year, helping overall group revenues rise 18% to a record $49.4 billion for the three months ending in De…