Apply by doing:
cd /usr/src/usr.sbin/kvm_mkdb
patch < kvm_mkdb.patch
make && make install
Index: nlist.c
===================================================================
RCS file: /cvs/src/usr.sbin/kvm_mkdb/nlist.c,v
retrieving revision 1.14
retrieving revision 1.15
diff -u -r1.14 -r1.15
--- nlist.c 1998/09/26 07:16:23 1.14
+++ nlist.c 1998/10/28 23:20:01 1.15
@@ -96,7 +96,7 @@
int nr, strsize;
size_t len;
u_long kerntextoff;
- size_t snamesize;
+ size_t snamesize = 0;
char *strtab, buf[1024], *sname, *p;
/* Read in exec structure. */