Avoid another checker warning.

diff --git a/io.c b/io.c
index 2c162a6ec5af84a6c83fbcf286c9c66642695198..7f023fce3de1c067d6fd09d2632b63808ac1f10b 100644 (file)
--- a/io.c
+++ b/io.c
@@ -776,7 +776,7 @@ static char *perform_io(size_t needed, int flags)
                        iobuf.in.len += n;
                }
 
-               if (iobuf.out_fd >= 0 && FD_ISSET(iobuf.out_fd, &w_fds)) {
+               if (out && FD_ISSET(iobuf.out_fd, &w_fds)) {
                        size_t len = iobuf.raw_flushing_ends_before ? iobuf.raw_flushing_ends_before - out->pos : out->len;
                        int n;