src: reduce unnecessary GetCwd calls

PR-URL: #53064
Reviewed-By: Richard Lau <rlau@redhat.com>
Reviewed-By: Trivikram Kamat <trivikr.dev@gmail.com>
Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Rafael Gonzaga <rafael.nunu@hotmail.com>

src/path.cc

@@ -240,8 +240,7 @@ std::string PathResolve(Environment* env,
   const size_t numArgs = paths.size();
 
   for (int i = numArgs - 1; i >= -1 && !resolvedAbsolute; i--) {
-    const std::string& path =
-        (i >= 0) ? std::string(paths[i]) : env->GetCwd(env->exec_path());
+    const std::string& path = (i >= 0) ? std::string(paths[i]) : cwd;
 
     if (!path.empty()) {
       resolvedPath = std::string(path) + "/" + resolvedPath;