FreeBSD: fix sendfile shim

[exim.git] / src / OS / os.c-FreeBSD

diff --git a/src/OS/os.c-FreeBSD b/src/OS/os.c-FreeBSD
index cb0b0bf7fb5f190a8a6c72317e350014c081e389..38df91cf4f0e79da324d74df8ba029931c2c52c0 100644 (file)
--- a/src/OS/os.c-FreeBSD
+++ b/src/OS/os.c-FreeBSD
@@ -19,7 +19,7 @@ os_sendfile(int out, int in, off_t * offp, size_t cnt)
 off_t loff = *offp, written;
 
 if (sendfile(in, out, loff, cnt, NULL, &written, 0) < 0) return (ssize_t)-1;
-*offp = loff + written;
+if (offp) *offp = loff + written;
 return (ssize_t)written;
 }