[patch] Cleanup: don't call free(NULL) unnecessarily

[Andreas Schwab]

Paul Pluzhnikov <ppluzhnikov@google.com> writes:

> Glibc free(NULL) also works in signal context, but end user could supply
> his own malloc/free, which may not.

I don't understand the reference to signal context.  free (0) is trivial
to implement, independent of context.

Andreas.

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Andreas Schwab, schwab@linux-m68k.org
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