Index: includes/class-wp-filesystem-ssh2.php
===================================================================
--- includes/class-wp-filesystem-ssh2.php	(revision 9860)
+++ includes/class-wp-filesystem-ssh2.php	(working copy)
@@ -167,7 +167,7 @@
 			} elseif (($returnbool) && (! (int) $data )) {
 				return false;
 			} else {
-				return $data;
+				return preg_replace('/^\s$/', '', $data);
 			}
 		}
 		return false;