Fix a clang warning about an undefined template (#318)
Fix a clang warning about an undefined template (#318)

cppformat/cppformat,lightslife/cppformat,cppformat/cppformat,alabuzhev/fmt,alabuzhev/fmt,lightslife/cppformat,mojoBrendan/fmt,mojoBrendan/fmt,alabuzhev/fmt,mojoBrendan/fmt,lightslife/cppformat,cppformat/cppformat