Haiku: define IovLen as c_int

nielx · Thomasdezeeuw · commit 2843d44a3440 · 2021-05-08T12:21:50.000Z
This fixes the build on the Haiku platform.
diff --git a/src/sys/unix.rs b/src/sys/unix.rs
@@ -168,6 +168,7 @@ type IovLen = usize;
     target_os = "dragonfly",
     target_os = "freebsd",
     target_os = "fuchsia",
+    target_os = "haiku",
     target_os = "illumos",
     target_os = "netbsd",
     target_os = "openbsd",
