Add StreamSelectLoop timeout rounding.

Author: ivkalita

src/StreamSelectLoop.php

@@ -159,7 +159,11 @@ public function run()
                 if ($timeout < 0) {
                     $timeout = 0;
                 } else {
-                    $timeout *= self::MICROSECONDS_PER_SECOND;
+                    /*
+                     * round() needed to correct float error:
+                     * https://github.com/reactphp/event-loop/issues/48
+                     */
+                    $timeout = round($timeout * self::MICROSECONDS_PER_SECOND);
                 }
 
             // The only possible event is stream activity, so wait forever ...
@@ -230,7 +234,6 @@ protected function streamSelect(array &$read, array &$write, $timeout)
     {
         if ($read || $write) {
             $except = null;
-
             // suppress warnings that occur, when stream_select is interrupted by a signal
             return @stream_select($read, $write, $except, $timeout === null ? null : 0, $timeout);
         }