[libvirt] [PATCH] Avoid passing NULL to printf %s specifier

[Daniel P. Berrange]

On Wed, Jan 14, 2009 at 06:03:59PM -0800, john.levon at sun.com wrote:
> # HG changeset patch
> # User john.levon at sun.com
> # Date 1231985011 28800
> # Node ID 2766ee91dd5ea8e99dac27ce730af0dc46a1d107
> # Parent  082e0f7d5de236e69bea177c8d4c4204350144c1
> Avoid passing NULL to printf %s specifier
> 
> This is non-portable.
> 
> Signed-off-by: John Levon <john.levon at sun.com>

ACK. Many more of these fixes required throughout libvirt.c
and other places for safety sake against callers supplying 
bogus args.

Daniel
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