Prevent the manylinux wheel assert from expecting
results from --zig when it wasn't used.
--- a/tests/common/integration.rs
+++ b/tests/common/integration.rs
@@ -44,11 +44,13 @@
         cli.push(bindings);
     }
 
+    let mut zig = zig;
     if zig && (env::var("GITHUB_ACTIONS").is_ok() || Zig::find_zig().is_ok()) {
         cli.push("--zig")
     } else {
         cli.push("--compatibility");
         cli.push("linux");
+        zig = false;
     }
 
     let options: BuildOptions = BuildOptions::try_parse_from(cli)?;