cmake: Add --enable-stdcall-fixup for MinGW builds
cmake: Add --enable-stdcall-fixup for MinGW builds

This fixes warnings for getaddrinfo() and freeaddrinfo().

Signed-off-by: Andreas Schneider <5be00ddc76278cf6077f5047ca3384a88460c671@cryptomilk.org>

Distrotech/libssh,taikoo/libssh,taikoo/libssh,mwgoldsmith/libssh,Distrotech/libssh,Distrotech/libssh,nviennot/libssh,sebadoom/libssh,sebadoom/libssh,nviennot/libssh,taikoo/libssh,DouglasHeriot/libssh,DouglasHeriot/libssh,mwgoldsmith/libssh,DouglasHeriot/libssh,kedazo/libssh,nviennot/libssh,pouete/libssh,Distrotech/libssh,pouete/libssh,sebadoom/libssh,mwgoldsmith/ssh,pouete/libssh,kedazo/libssh,kedazo/libssh,mwgoldsmith/ssh,sebadoom/libssh,taikoo/libssh,mwgoldsmith/libssh,mwgoldsmith/ssh,kedazo/libssh,pouete/libssh,mwgoldsmith/libssh,nviennot/libssh,mwgoldsmith/ssh,DouglasHeriot/libssh