Trim empty lines. Nothing but newline.

git-svn-id: https://develop.svn.wordpress.org/trunk@5700 602fd350-edb4-49c9-b593-d223f7449a82

wp-includes/streams.php

@@ -28,17 +28,17 @@ class StreamReader {
   function read($bytes) {
     return false;
   }
-  
+
   // should return new position
   function seekto($position) {
     return false;
   }
-  
+
   // returns current position
   function currentpos() {
     return false;
   }
-  
+
   // returns length of entire stream (limit for seekto()s)
   function length() {
     return false;
@@ -114,7 +114,7 @@ class FileReader {
         $bytes -= strlen($chunk);
       }
       $this->_pos = ftell($this->_fd);
-      
+
       return $data;
     } else return '';
   }