refactor(macos): handle the EnvironmentVariableNotFound error for the env vars 'LANG' and 'TERM_PROGRAM'

src/macos/system.zig

@@ -33,7 +33,9 @@ pub fn getHostname(allocator: std.mem.Allocator) ![]u8 {
 }
 
 pub fn getLocale(allocator: std.mem.Allocator) ![]u8 {
-    const locale = try std.process.getEnvVarOwned(allocator, "LANG");
+    const locale = std.process.getEnvVarOwned(allocator, "LANG") catch |err| if (err == error.EnvironmentVariableNotFound) {
+        return allocator.dupe(u8, "Unknown");
+    } else return err;
     return locale;
 }