Fix wrench build script

Author: Mark-Simulacrum

collector/benchmarks/webrender/wrench/build.rs

@@ -11,8 +11,8 @@ fn main() {
     let out_dir = env::var_os("OUT_DIR").unwrap();
     let out_dir = PathBuf::from(out_dir);
 
-    println!("cargo:rerun-if-changed=res/wrench.exe.manifest");
     if target.contains("windows") {
+        println!("cargo:rerun-if-changed=res/wrench.exe.manifest");
         let src = PathBuf::from("res/wrench.exe.manifest");
         let mut dst = out_dir
             .parent()