puList.cxx: _list_box->getIntegerValue() returns -1 as long as no list

[flightgear.git] / src / GUI / puList.cxx

diff --git a/src/GUI/puList.cxx b/src/GUI/puList.cxx
index 5902a68ca1fafead66bdba89d5f7578dbb8de54a..b99ccd4051b66d2547938c0e180af2d0c464d838 100644 (file)
--- a/src/GUI/puList.cxx
+++ b/src/GUI/puList.cxx
@@ -79,7 +79,8 @@ puList::newList (char ** contents)
 char *
 puList::getListStringValue ()
 {
-    return _contents[_list_box->getIntegerValue()];
+    int i = _list_box->getIntegerValue();
+    return i < 0 ? 0 : _contents[i];
 }
 
 int