Improve BMP sniffer rule
|Reported by:||humdinger||Owned by:||pulkomandy|
This is hrev47314.
The current sniffing rule '0.50 ("BM")' recognizes text files starting with "BM" as image/bmp files. FWIW, changing the rule to '0.25 ("BM")' seems to fix this misidentifiction.
But maybe there's a more specific sniffer rule that works better. Wikipedia has infos on the bmp file header.