Use secure_getenv
Submitted by Florian Weimer
Link to original bug (#755472)
Description
As a safety measure against use from SUID/SGID processes, secure_getenv should be used in girepository/girepository.c to obtain the value of the GI_TYPELIB_PATH environment variable (and not g_getenv).
Alternatively, the library could refuse to work if getauxval(AT_SECURE) is true.