From 2753052adf3b21f7af1218b6a325484a5481658e Mon Sep 17 00:00:00 2001
From: Tamir Duberstein <tamird@gmail.com>
Date: Fri, 6 Oct 2023 08:51:30 -0400
Subject: [PATCH] compiler: always use var_os("RUST_BACKTRACE")

There are 3 instances of var(...) and 3 instances of var_os(...); the
latter avoids an appearance of unhandled error, so use it everywhere.
---
 build_system/main.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/build_system/main.rs b/build_system/main.rs
index 798ae9dbd5006..e8cf486e966ed 100644
--- a/build_system/main.rs
+++ b/build_system/main.rs
@@ -55,7 +55,7 @@ enum CodegenBackend {
 }
 
 fn main() {
-    if env::var("RUST_BACKTRACE").is_err() {
+    if env::var_os("RUST_BACKTRACE").is_none() {
         env::set_var("RUST_BACKTRACE", "1");
     }
     env::set_var("CG_CLIF_DISABLE_INCR_CACHE", "1");