libkvm code janitoring

- make WARNS=6 clean for archs w/o strict alignment requirments
- add const, ANSIfy, remove unused vars, cast types for comparison
- thanks to differing definitions of VM_MIN_ADDRESS across our archs, we
  need to trick the compiler to not complain about signedness. We could
  either fix VM_MIN_ADDRESS to always be a simple integer or make the
  check conditional on $ARCH.

Closes PRs:	kern/42386, kern/83364
Reviewed by:	bde

1 files changed, 0 insertions, 3 deletions

diff --git a/lib/libkvm/kvm_minidump_amd64.c b/lib/libkvm/kvm_minidump_amd64.c
index 15630b1..8d31673 100644
--- a/lib/libkvm/kvm_minidump_amd64.c
+++ b/lib/libkvm/kvm_minidump_amd64.c
@@ -136,7 +136,6 @@ _kvm_minidump_freevtop(kvm_t *kd)
 int
 _kvm_minidump_initvtop(kvm_t *kd)
 {
-	u_long pa;
 	struct vmstate *vmst;
 	off_t off;
 
@@ -207,7 +206,6 @@ _kvm_minidump_vatop_v1(kvm_t *kd, u_long va, off_t *pa)
 	u_long offset;
 	pt_entry_t pte;
 	u_long pteindex;
-	int i;
 	u_long a;
 	off_t ofs;
 
@@ -258,7 +256,6 @@ _kvm_minidump_vatop(kvm_t *kd, u_long va, off_t *pa)
 	pd_entry_t pte;
 	u_long pteindex;
 	u_long pdeindex;
-	int i;
 	u_long a;
 	off_t ofs;