s/NULL byte/NUL byte/ in comment refering to C string terminator.

Reported-By: Robert Haas
Discussion: https://postgr.es/m/CA+Tgmoa+YBvWgFST2NVoeXjVSohEpK=vqnVCsoCkhTVVxfLcVQ@mail.gmail.com

diff --git a/src/backend/postmaster/pgstat.c b/src/backend/postmaster/pgstat.c
index 9e2dce4f4c356bd7a85a8c34fc74bdb86ced4d73..fd6ebc976afe39d32269b53aabdd814254b92a8a 100644 (file)
--- a/src/backend/postmaster/pgstat.c
+++ b/src/backend/postmaster/pgstat.c
@@ -6297,14 +6297,14 @@ pgstat_clip_activity(const char *raw_activity)
    /*
     * Some callers, like pgstat_get_backend_current_activity(), do not
     * guarantee that the buffer isn't concurrently modified. We try to take
-    * care that the buffer is always terminated by a NULL byte regardless,
-    * but let's still be paranoid about the string's length. In those cases
-    * the underlying buffer is guaranteed to be
-    * pgstat_track_activity_query_size large.
+    * care that the buffer is always terminated by a NUL byte regardless, but
+    * let's still be paranoid about the string's length. In those cases the
+    * underlying buffer is guaranteed to be pgstat_track_activity_query_size
+    * large.
     */
    activity = pnstrdup(raw_activity, pgstat_track_activity_query_size - 1);
 
-   /* now double-guaranteed to be NULL terminated */
+   /* now double-guaranteed to be NUL terminated */
    rawlen = strlen(activity);
 
    /*