wined3d powl redefinition msvc amd64 error

\dll\directx\wine\wined3d\powf.c(9) : error C2084: function 'float powf(
float,float)' already has a body
\include\crt/math.h(167) : see previous definition of 'powf'
In amd64 msvc it gives that error so after removing the previous definition in math.h, it is solved.