Copy/paste mistake.

git-svn-id: svn://svn.code.sf.net/p/loki-lib/code/trunk@1010 7ec92016-0320-0410-acc4-a06ded1c099a

test/flex_string/main.cpp

@@ -608,7 +608,7 @@ namespace Tests
   {
     // 21.3.1
     const typename String::size_type number = random(0, MaxString<String>::value);
-    const typename String::size_type value = random('a', 'z');
+    const typename String::value_type value = random('a', 'z');
     String result(number, value);
     return result;
   }