Fixed issue #05282: save.php error when trying to save a fileUpload f…

…ield, but no file was uploaded

git-svn-id: file:///Users/Shitiz/Downloads/lssvn/source/limesurvey@10289 b72ed6b6-b9f8-46b5-92b4-906544132732

save.php

@@ -500,7 +500,7 @@ function createinsertquery()
                     // if the files have not been saved already,
                     // move the files from tmp to the files folder
 
-                    if (file_exists("tmp/upload/".$phparray[0]->filename))
+                    if (!is_null($phparray) && count($phparray) > 0 && file_exists("tmp/upload/".$phparray[0]->filename))
                     {
                         // move files from temp to files directory
                         $tmp = "tmp/upload/";