diff -rupN --no-dereference libLAS-d76a061f33a69a36ab116cd939c5d444b301efd8/include/liblas/liblas.hpp libLAS-d76a061f33a69a36ab116cd939c5d444b301efd8-new/include/liblas/liblas.hpp
--- libLAS-d76a061f33a69a36ab116cd939c5d444b301efd8/include/liblas/liblas.hpp	2020-04-05 18:40:29.000000000 +0200
+++ libLAS-d76a061f33a69a36ab116cd939c5d444b301efd8-new/include/liblas/liblas.hpp	2020-06-08 11:37:26.906014997 +0200
@@ -137,7 +137,10 @@ inline std::istream* Open(std::string co
     {
         ifs = new std::ifstream();
         ifs->open(filename.c_str(), mode);
-        if (ifs->is_open() == false) return NULL;
+        if (ifs->is_open() == false) {
+            delete ifs;
+            return NULL;
+        }
         return ifs;
     }
     catch (...)