Feng Gao 2e4250225c Use "|" instead of "+" when combine the _IO_LINE_BUF and _IO_UNBUFFERED flags ...

Both of "_IO_UNBUFFERED" and "_IO_LINE_BUF"  are the bit flags, but I
find there are some codes looks like "_IO_LINE_BUF+_IO_UNBUFFERED",
while some codes are "_IO_LINE_BUF|_IO_UNBUFFERED".

I think the former is not good, even though the final result is same.

2015-07-08 13:53:11 +05:30

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