Fix macro redefinition for newer MSVC

lloyd / yajl

A fast streaming JSON parsing library in C.

http://lloyd.github.com/yajl

ISC License

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Fix macro redefinition for newer MSVC #181

Open cxong opened 8 years ago

cxong commented 8 years ago

Visual Studio 2013+ have functions like isnan defined, so the code should check against _MSC_VER to see if the redefinition to _isnan is necessary.