Warning fixes from Christos Zoulas

- shadowed variables
- signed/unsigned confusion
- const lossage
- incomplete structure initializations
- unused code

kdc/mit_dump.c

@@ -77,7 +77,7 @@ unless no extra data
 static int
 hex_to_octet_string(const char *ptr, krb5_data *data)
 {
-    int i;
+    size_t i;
     unsigned int v;
     for(i = 0; i < data->length; i++) {
 	if(sscanf(ptr + 2 * i, "%02x", &v) != 1)
@@ -165,7 +165,7 @@ fix_salt(krb5_context context, hdb_entry *ent, int key_num)
     case KRB5_KDB_SALTTYPE_NOREALM:
     {
 	size_t len;
-	int i;
+	size_t i;
 	char *p;
 	
 	len = 0;