[SSSD] [PATCH] Fix segmentation fault in test_io.

[Lukas Slebodnik]

I wanted to revie som patches, but test failed with unrelated issue to revieved
patch.

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[ RUN      ] test_sss_open_cloexec_success
mkstemp failed
fd != -1
ERROR: ../sssd/src/tests/cmocka/test_io.c:81 Failure!
[  FAILED  ] test_sss_open_cloexec_success
[ RUN      ] test_sss_open_cloexec_fail
[       OK ] test_sss_open_cloexec_fail
[ RUN      ] test_sss_openat_cloexec_success
mkstemp failed
11
[  FAILED  ] test_sss_openat_cloexec_success
[ RUN      ] test_sss_openat_cloexec_fail
/bin/sh: line 5: 12545 Segmentation fault      (core dumped)    
LDB_MODULES_PATH=/dev/shm/sssd_build/ldb_mod_test_dir ${dir}$tst 
FAIL: test-io
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Attached patch fix this bug.

LS