Remove some unused variables and fix two blatant core dump triggers.

3 files changed, 9 insertions, 11 deletions

diff --git a/lib/libkvm/kvm.c b/lib/libkvm/kvm.c
index b8d342b..7b72075 100644
--- a/lib/libkvm/kvm.c
+++ b/lib/libkvm/kvm.c
@@ -280,20 +280,21 @@ kvm_openfiles(uf, mf, sf, flag, errout)
 }
 
 kvm_t *
-kvm_open(uf, mf, sf, flag, program)
+kvm_open(uf, mf, sf, flag, errstr)
 	const char *uf;
 	const char *mf;
 	const char *sf;
 	int flag;
-	const char *program;
+	const char *errstr;
 {
 	register kvm_t *kd;
 
-	if ((kd = malloc(sizeof(*kd))) == NULL && program != NULL) {
-		(void)fprintf(stderr, "%s: %s\n", strerror(errno));
+	if ((kd = malloc(sizeof(*kd))) == NULL) {
+		(void)fprintf(stderr, "%s: %s\n", 
+			errstr ? errstr : "kvm_open" , strerror(errno));
 		return (0);
 	}
-	kd->program = program;
+	kd->program = errstr;
 	return (_kvm_open(kd, uf, mf, sf, flag, NULL));
 }
 
diff --git a/lib/libkvm/kvm_file.c b/lib/libkvm/kvm_file.c
index 398c36c..1e1d6bd 100644
--- a/lib/libkvm/kvm_file.c
+++ b/lib/libkvm/kvm_file.c
@@ -78,10 +78,9 @@ kvm_deadfiles(kd, op, arg, filehead_o, nfiles)
 	int op, arg, nfiles;
 	long filehead_o;
 {
-	int buflen = kd->arglen, needed = buflen, error, n = 0;
-	struct file *fp, file, *filehead;
+	int buflen = kd->arglen, n = 0;
+	struct file *fp, *filehead;
 	register char *where = kd->argspc;
-	char *start = where;
 
 	/*
 	 * first copyout filehead
diff --git a/lib/libkvm/kvm_proc.c b/lib/libkvm/kvm_proc.c
index 381c830..c7a95cb 100644
--- a/lib/libkvm/kvm_proc.c
+++ b/lib/libkvm/kvm_proc.c
@@ -465,6 +465,7 @@ kvm_argv(kd, p, addr, narg, maxcnt)
 			return (kd->argv);
 		}
 	}
+	return (0);
 }
 
 static void
@@ -579,9 +580,6 @@ kvm_uread(kd, p, uva, buf, len)
 	char procfile[MAXPATHLEN];
 	ssize_t amount;
 	int fd;
-	u_long tmpuva = uva;
-	int i;
-	char *chr;
 
 	cp = buf;