Windows build warnings

[nigels-com]

  tutf8e.c
C:\projects\fluent-bit-2e87g\lib\tutf8e\src\tutf8e.c(68): warning C4242: '=': conversion from 'const uint16_t' to 'unsigned char', possible loss of data [C:\projects\fluent-bit-2e87g\build\lib\tutf8e\tutf8e.vcxproj]
C:\projects\fluent-bit-2e87g\lib\tutf8e\src\tutf8e.c(74): warning C4244: '=': conversion from 'int' to 'unsigned char', possible loss of data [C:\projects\fluent-bit-2e87g\build\lib\tutf8e\tutf8e.vcxproj]

[nigels-com]

32-bit

[00:12:39]   Building Custom Rule C:/projects/fluent-bit-2e87g/lib/tutf8e/CMakeLists.txt
[00:12:39]   tutf8e.c
[00:12:39] C:\projects\fluent-bit-2e87g\lib\tutf8e\src\tutf8e.c(93): warning C4242: '=': conversion from 'const uint16_t' to 'unsigned char', possible loss of data [C:\projects\fluent-bit-2e87g\build\lib\tutf8e\tutf8e.vcxproj]
[00:12:39] C:\projects\fluent-bit-2e87g\lib\tutf8e\src\tutf8e.c(99): warning C4244: '=': conversion from 'int' to 'unsigned char', possible loss of data [C:\projects\fluent-bit-2e87g\build\lib\tutf8e\tutf8e.vcxproj]
[00:12:39] c:\projects\fluent-bit-2e87g\lib\tutf8e\src\tutf8e.c(42): warning C4706: assignment within conditional expression [C:\projects\fluent-bit-2e87g\build\lib\tutf8e\tutf8e.vcxproj]
[00:12:39] c:\projects\fluent-bit-2e87g\lib\tutf8e\src\tutf8e.c(45): warning C4706: assignment within conditional expression [C:\projects\fluent-bit-2e87g\build\lib\tutf8e\tutf8e.vcxproj]
[00:12:39]   tutf8e.vcxproj -> C:\projects\fluent-bit-2e87g\build\library\Release\tutf8e.lib

64-bit

[00:12:43]   Building Custom Rule C:/projects/fluent-bit-2e87g/lib/tutf8e/CMakeLists.txt
[00:12:43]   tutf8e.c
[00:12:43] C:\projects\fluent-bit-2e87g\lib\tutf8e\src\tutf8e.c(93): warning C4242: '=': conversion from 'const uint16_t' to 'unsigned char', possible loss of data [C:\projects\fluent-bit-2e87g\build\lib\tutf8e\tutf8e.vcxproj]
[00:12:43] C:\projects\fluent-bit-2e87g\lib\tutf8e\src\tutf8e.c(99): warning C4244: '=': conversion from 'int' to 'unsigned char', possible loss of data [C:\projects\fluent-bit-2e87g\build\lib\tutf8e\tutf8e.vcxproj]
[00:12:43] c:\projects\fluent-bit-2e87g\lib\tutf8e\src\tutf8e.c(42): warning C4706: assignment within conditional expression [C:\projects\fluent-bit-2e87g\build\lib\tutf8e\tutf8e.vcxproj]
[00:12:43] c:\projects\fluent-bit-2e87g\lib\tutf8e\src\tutf8e.c(45): warning C4706: assignment within conditional expression [C:\projects\fluent-bit-2e87g\build\lib\tutf8e\tutf8e.vcxproj]
[00:12:43]   tutf8e.vcxproj -> C:\projects\fluent-bit-2e87g\build\library\Release\tutf8e.lib