tests: Avoid memory leaks

Signed-off-by: Jakub Jelen <jjelen@redhat.com>
Reviewed-by: Norbert Pocs <npocs@redhat.com>

tests/unittests/torture_pki_rsa_uri.c

@@ -292,6 +292,8 @@ torture_run_tests(void)
                                 setup_directory_structure,
                                 teardown_directory_structure);
 
+    ssh_free(session);
+
     ssh_finalize();
 
     return rc;