test: skip postmortem metadata test when nm fails

On Windows with msys installation, `nm` is available but it is not able to grab symbols from the Windows build. Skipping the test if nm outputs anything to stderr fixes that. PR-URL: #19107 Reviewed-By: Ben Noordhuis <[email protected]> Reviewed-By: Colin Ihrig <[email protected]> Reviewed-By: Luigi Pinca <[email protected]> Reviewed-By: Matheus Marchini <[email protected]> Reviewed-By: James M Snell <[email protected]>

Author: joyeecheung

test/parallel/test-postmortem-metadata.js

@@ -26,6 +26,11 @@ const nm = spawnSync('nm', args);
 if(nm.error&&nm.error.errno==='ENOENT')
 common.skip('nm not found on system');
 
+conststderr=nm.stderr.toString();
+if(stderr.length>0){
+common.skip(`Failed to execute nm: ${stderr}`);
+}
+
 constsymbolRe=/\s_?(v8dbg_.+)$/;
 constsymbols=nm.stdout.toString().split('\n').reduce((filtered,line)=>{
 constmatch=line.match(symbolRe);