libyang REFACTOR rename sized array size to count

... because it reflects the fact that it may not
always (internally) be the size of the array.
diff --git a/src/plugins_exts_nacm.c b/src/plugins_exts_nacm.c
index fc0c5da..5f131b1 100644
--- a/src/plugins_exts_nacm.c
+++ b/src/plugins_exts_nacm.c
@@ -34,7 +34,7 @@
 {
     struct lysc_node *parent = NULL, *iter;
     struct lysc_ext_instance *inherited;
-    LY_ARRAY_SIZE_TYPE u;
+    LY_ARRAY_COUNT_TYPE u;
 
     static const uint8_t nacm_deny_all = 1;
     static const uint8_t nacm_deny_write = 2;