always pass microseconds to usleep as integers

Author: xabbuh

Response/AsyncContext.php

@@ -92,7 +92,7 @@ public function pause(float $duration): void
         if (\is_callable($pause = $this->response->getInfo('pause_handler'))) {
             $pause($duration);
         } elseif (0 < $duration) {
-            usleep(1E6 * $duration);
+            usleep((int) (1E6 * $duration));
         }
     }
 

Response/TransportResponseTrait.php

@@ -303,7 +303,7 @@ public static function stream(iterable $responses, float $timeout = null): \Gene
             }
 
             if (-1 === self::select($multi, min($timeoutMin, $timeoutMax - $elapsedTimeout))) {
-                usleep(min(500, 1E6 * $timeoutMin));
+                usleep((int) min(500, 1E6 * $timeoutMin));
             }
 
             $elapsedTimeout = microtime(true) - $lastActivity;