clang: build failure in chfs

[Thomas Klausner <wiz%NetBSD.org@localhost>]

When building NetBSD with clang, I get
--- dependall-chfs ---
/archive/cvs/src/sys/ufs/chfs/chfs_vnode.c:105:28: error: implicit conversion 
from enumeration type 'enum chtype' to different enumeration type 'enum vtype' 
[-Werror,-Wconversion]
                vp->v_type = CHTTOVT(ip->ch_type);
                           ~ ~~~~~~~~~~~~^~~~~~~~
/archive/cvs/src/sys/ufs/chfs/chfs_inode.h:61:26: note: expanded from macro 
'CHTTOVT'
#define CHTTOVT(ch_type)        ch_type
                                ^
/archive/cvs/src/sys/ufs/chfs/chfs_vnode.c:245:28: error: implicit conversion 
from enumeration type 'enum vtype' to different enumeration type 'enum chtype' 
[-Werror,-Wconversion]
        ip->ch_type = VTTOCHT(vp->v_type);
                    ~ ~~~~~~~~~~~~^~~~~~~
/archive/cvs/src/sys/ufs/chfs/chfs_inode.h:62:26: note: expanded from macro 
'VTTOCHT'
#define VTTOCHT(v_type)         v_type
                                ^
2 errors generated.
*** [chfs_vnode.o] Error code 1

nbmake: stopped in /archive/cvs/src/sys/modules/chfs

 Thomas