confile: cleanup lxc_config_parse_arch()

src/lxc/confile.c

@@ -2990,7 +2990,6 @@ void lxc_config_define_free(struct lxc_list *defines)
 signed long lxc_config_parse_arch(const char *arch)
 {
 #if HAVE_SYS_PERSONALITY_H
-	size_t i;
 	struct per_name {
 		char *name;
 		unsigned long per;
@@ -3024,7 +3023,7 @@ signed long lxc_config_parse_arch(const char *arch)
 	};
 	size_t len = sizeof(pername) / sizeof(pername[0]);
 
-	for (i = 0; i < len; i++)
+	for (int i = 0; i < len; i++)
 		if (!strcmp(pername[i].name, arch))
 			return pername[i].per;
 #endif