Make proc_open_bug69900.phpt more robust against parallelization

With multiple workers running this might take more than 1ms. Bump
this up to the same threshold that was already used for CI.

Author: nikic

ext/standard/tests/streams/proc_open_bug69900.phpt

@@ -6,7 +6,7 @@ Bug #69900 Commandline input/output weird behaviour with STDIO
 error_reporting(E_ALL);
 
 $fl = dirname(__FILE__) . DIRECTORY_SEPARATOR . "test69900.php";
-$max_ms = ((bool)getenv('TRAVIS') || (bool)getenv('APPVEYOR')) ? 10 : 1;
+$max_ms = 10;
 
 $test_content = '<?php
 
@@ -34,7 +34,13 @@ for($i = 0; $i < 10; $i++){
 	$t1 = microtime(1);
 
 	echo $s;
-	echo "fgets() took ", (($t1 - $t0)*1000 > $max_ms ? 'more' : 'less'), " than $max_ms ms\n";
+
+	$dt_ms = ($t1 - $t0)*1000;
+	if ($dt_ms > $max_ms) {
+		echo "fgets() took more than $max_ms ms ($dt_ms ms)\n";
+	} else {
+		echo "fgets() took less than $max_ms ms\n";
+	}
 }
 
 fclose($pipes[0]);
@@ -51,7 +57,7 @@ $fl = dirname(__FILE__) . DIRECTORY_SEPARATOR . "test69900.php";
 ?>
 --EXPECTF--
 hello0
-fgets() took more than %d ms
+fgets() took more than %d ms (%s ms)
 hello1
 fgets() took less than %d ms
 hello2