fixed occasion where counting null value

library/Zend/Validate/File/FilesSize.php

@@ -155,10 +155,6 @@ class Zend_Validate_File_FilesSize extends Zend_Validate_File_Size
             }
         }
 
-        if (count($this->_messages) > 0) {
-            return false;
-        }
-
-        return true;
+        return !empty($this->_messages);
     }
 }

library/Zend/Validate/File/ImageSize.php

@@ -338,11 +338,7 @@ class Zend_Validate_File_ImageSize extends Zend_Validate_Abstract
             $this->_throw($file, self::HEIGHT_TOO_BIG);
         }
 
-        if (count($this->_messages) > 0) {
-            return false;
-        }
-
-        return true;
+        return !empty($this->_messages);
     }
 
     /**