tests: skip second ecore_shutdown call in elm_suite when forking

Summary:
init is only called here to verify the refcount, shutdown is only necessary
when not forking in order to preserve the environment

ref T6864

Reviewers: stefan_schmidt

Subscribers: cedric

Maniphest Tasks: T6864

Differential Revision: https://phab.enlightenment.org/D5958

src/tests/elementary/elm_suite.c

@@ -119,6 +119,8 @@ SUITE_SHUTDOWN(elm)
    ck_assert_int_eq(elm_shutdown(), 0);
    /* verify that ecore was de-initialized completely */
    ck_assert_int_eq(ecore_init(), 1);
+   /* avoid slowdowns in fork mode */
+   if (getpid() != main_pid) return;
    ck_assert_int_eq(ecore_shutdown(), 0);
 }