fix: setup postgres

Author: psteinroe

packages/@postgrestools/postgrestools/bin/postgrestools

@@ -21,19 +21,21 @@ const PLATFORMS = {
 };
 
 function isMusl() {
-  let stderr;
+  let stdout;
   try {
-    stderr = execSync("ldd --version", {
+    stdout = execSync("ldd --version", {
       stdio: [
         "ignore", // stdin
         "pipe", // stdout – glibc systems print here
         "pipe", // stderr – musl systems print here
       ],
     });
   } catch (err) {
-    stderr = err.stderr;
+        if (typeof err === "object" && err !== null && "stderr" in err) {
+    stdout = err.stderr;
+        }
   }
-  if (stderr?.indexOf("musl") > -1) {
+  if (typeof stdout === 'string' && stdout?.indexOf("musl") > -1) {
     return true;
   }
   return false;