fix errno comparison

this affected `-o remember` in single-thread mode, it could prematurely
exit if a signal was received

 # start an example filesystem from example/
 ./passthrough -f -s -o remember=5 ./mnt

 # make the poll() call return with EINTR
 pkill -PIPE passthrough

1 files changed, 1 insertions, 1 deletions

diff --git a/lib/fuse.c b/lib/fuse.c
index 2125cda..a8c5915 100755
--- a/lib/fuse.c
+++ b/lib/fuse.c
@@ -4533,7 +4533,7 @@ static int fuse_session_loop_remember(struct fuse *f)
 
 		res = poll(&fds, 1, timeout * 1000);
 		if (res == -1) {
-			if (errno == -EINTR)
+			if (errno == EINTR)
 				continue;
 			else
 				break;