Linker warning caused by duplicate inline functions in lua-rapidjson

[rdw-software]

Don't care to investigate right now, might be obsoleted by #576. But for the record:

[27/27] Linking target ninjabuild-windows/evo.exe ...
ninjabuild-windows/librapidjson.a(rapidjson.cpp.obj): duplicate section `.rdata$_ZZN9rapidjson8internal8DigitGenERKNS0_5DiyFpES3_yPcPiS5_E6kPow10[_ZZN9rapidjson8internal8DigitGenERKNS0_5DiyFpES3_yPcPiS5_E6kPow10]' has different size
ninjabuild-windows/librapidjson.a(Document.cpp.obj): duplicate section `.rdata$_ZZN9rapidjson8internal8DigitGenERKNS0_5DiyFpES3_yPcPiS5_E6kPow10[_ZZN9rapidjson8internal8DigitGenERKNS0_5DiyFpES3_yPcPiS5_E6kPow10]' has different size

Both objects are included in the static library, which might not have been designed to be linked in the way required for this project?