nasmlib: Rename elements() macro to ARRAY_SIZE

ARRAY_SIZE is a well known name pointing out that
we're dealing with array in macro argument.

Also to be on a safe side prefix_name helper should
check the index been in bounds more precisely.

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/nasmlib.c b/nasmlib.c
index 2ae86194..460186e6 100644
--- a/nasmlib.c
+++ b/nasmlib.c
@@ -570,7 +570,7 @@ static const char *prefix_names[] = {
 const char *prefix_name(int token)
 {
     unsigned int prefix = token-PREFIX_ENUM_START;
-    if (prefix > elements(prefix_names))
+    if (prefix >= ARRAY_SIZE(prefix_names))
 	return NULL;
 
     return prefix_names[prefix];