chmlib: fix x86_64 build.
chmlib: fix x86_64 build.

haikuports/haikuports,koletzky/haikuports,nielx/haikuports,Begasus/haikuports,Begasus/haikuports,koletzky/haikuports,haikuports/haikuports,miqlas/haikuports,koletzky/haikuports,haikuports/haikuports,haikuports/haikuports,Begasus/haikuports,nielx/haikuports,miqlas/haikuports,moochris/haikuports,moochris/haikuports,miqlas/haikuports,Begasus/haikuports,nielx/haikuports,haikuports/haikuports,Begasus/haikuports,moochris/haikuports