Fix for cygwin select impl

Author: Berrysoft

msys2/PKGBUILD

@@ -1,6 +1,6 @@
 pkgname=fish
 pkgver=4.0.0
-pkgrel=2
+pkgrel=3
 epoch=
 pkgdesc='Smart and user friendly shell intended mostly for interactive use'
 arch=('x86_64')

src/fd_monitor.rs

@@ -386,7 +386,7 @@ impl BackgroundFdMonitor {
                     .map(|duration| duration.as_micros() as u64)
                     .unwrap_or(FdReadableSet::kNoTimeout),
             );
-            if ret < 0 && !matches!(errno().0, libc::EINTR | libc::EBADF) {
+            if ret < 0 && !matches!(errno().0, libc::EINTR | libc::EBADF | 0) {
                 // Surprising error
                 perror("select");
             }