acct.2: SYNOPSIS: Add _Nullable

Signed-off-by: Alejandro Colomar <alx@kernel.org>

diff --git a/man2/acct.2 b/man2/acct.2
index 1a676b7c7be582675895696220b4df8fa07a57c6..f9fc1cd5c86f0645fc1bd152bba4962f34691cb4 100644 (file)
--- a/man2/acct.2
+++ b/man2/acct.2
@@ -19,7 +19,7 @@ Standard C library
 .nf
 .B #include <unistd.h>
 .PP
-.BI "int acct(const char *" filename );
+.BI "int acct(const char *_Nullable " filename );
 .fi
 .PP
 .RS -4