NULL pointer crashes hashname()

By accidently passing a NULL pointer in a RuleStmt's RangeVar relname i
recognized
that this can lead to a crash of the backend in the function hashname(),
located in hashfunc.c. It calls strlen() without checking the key pointer
in line 126, which leads on my machine to a null pointer violation. Since
i'm bloody new to the backend i don't really know if its worth to talk
about, but i want you to know.....

Platform is MDK Linux 10.0 Community Edition, glibc 2.3.3

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Bernd