XPath: Fixed evaluate_string for wchar mode

git-svn-id: http://pugixml.googlecode.com/svn/trunk@660 99668b35-9821-0410-8761-19e4c4f06640

src/pugixpath.cpp

@@ -3785,7 +3785,7 @@ namespace pugi
 		size_t size = r.length() + 1;
 		
 		// $$ zero-terminate?
-		if (capacity > 0) memcpy(buffer, r.c_str(), size < capacity ? size : capacity);
+		if (capacity > 0) memcpy(buffer, r.c_str(), (size < capacity ? size : capacity) * sizeof(char_t));
 		
 		return size;
 	}