compilers: add werror flag for msvc
compilers: add werror flag for msvc

rhd/meson,jeandet/meson,wberrier/meson,aaronp24/meson,mesonbuild/meson,wberrier/meson,becm/meson,centricular/meson,jpakkane/meson,centricular/meson,MathieuDuponchelle/meson,becm/meson,thiblahute/meson,becm/meson,pexip/meson,becm/meson,ernestask/meson,pexip/meson,QuLogic/meson,trhd/meson,thiblahute/meson,wberrier/meson,QuLogic/meson,trhd/meson,jpakkane/meson,mesonbuild/meson,wberrier/meson,jpakkane/meson,fmuellner/meson,pexip/meson,mesonbuild/meson,aaronp24/meson,pexip/meson,mesonbuild/meson,aaronp24/meson,jpakkane/meson,centricular/meson,rhd/meson,mesonbuild/meson,trhd/meson,thiblahute/meson,fmuellner/meson,mesonbuild/meson,rhd/meson,jpakkane/meson,jeandet/meson,becm/meson,thiblahute/meson,jeandet/meson,QuLogic/meson,thiblahute/meson,MathieuDuponchelle/meson,becm/meson,MathieuDuponchelle/meson,MathieuDuponchelle/meson,fmuellner/meson,ernestask/meson,MathieuDuponchelle/meson,trhd/meson,mesonbuild/meson,wberrier/meson,MathieuDuponchelle/meson,ernestask/meson,MathieuDuponchelle/meson,QuLogic/meson,centricular/meson,ernestask/meson,aaronp24/meson,aaronp24/meson,trhd/meson,jpakkane/meson,fmuellner/meson,MathieuDuponchelle/meson,wberrier/meson,rhd/meson,aaronp24/meson,centricular/meson,ernestask/meson,fmuellner/meson,jeandet/meson,mesonbuild/meson,pexip/meson,jeandet/meson,ernestask/meson,thiblahute/meson,pexip/meson,mesonbuild/meson,jpakkane/meson,pexip/meson,jpakkane/meson,fmuellner/meson,jeandet/meson,QuLogic/meson,trhd/meson,rhd/meson,becm/meson,wberrier/meson,wberrier/meson,centricular/meson,trhd/meson,jeandet/meson,QuLogic/meson,pexip/meson,pexip/meson,jeandet/meson,fmuellner/meson,fmuellner/meson,pexip/meson,becm/meson,ernestask/meson,ernestask/meson,aaronp24/meson,becm/meson,jeandet/meson,rhd/meson,QuLogic/meson,QuLogic/meson,becm/meson,centricular/meson,thiblahute/meson,trhd/meson,thiblahute/meson,centricular/meson,rhd/meson,fmuellner/meson,ernestask/meson,thiblahute/meson,trhd/meson,QuLogic/meson,MathieuDuponchelle/meson,aaronp24/meson,rhd/meson,aaronp24/meson,jpakkane/meson,mesonbuild/meson