From 72801b8b205b3bdc05fad696034b2f902b817b58 Mon Sep 17 00:00:00 2001
From: Dmitry-Me <wipedout@yandex.ru>
Date: Thu, 7 May 2015 09:41:39 +0300
Subject: [PATCH] First check, then convert

---
 tinyxml2.cpp | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tinyxml2.cpp b/tinyxml2.cpp
index 03ce1b9..6e1985b 100755
--- a/tinyxml2.cpp
+++ b/tinyxml2.cpp
@@ -1852,12 +1852,12 @@ XMLError XMLDocument::LoadFile( FILE* fp )
         return _errorID;
     }
 
-    const size_t size = filelength;
-    if ( size == 0 ) {
+    if ( filelength == 0 ) {
         SetError( XML_ERROR_EMPTY_DOCUMENT, 0, 0 );
         return _errorID;
     }
 
+    const size_t size = filelength;
     _charBuffer = new char[size+1];
     size_t read = fread( _charBuffer, 1, size, fp );
     if ( read != size ) {