[Libvir] Remove more useless if tests before "free"-like functions.

[Jim Meyering]

Jim Meyering <jim at meyering.net> wrote:

> A few new uses of already-checked functions were added recently,
> and I've added xmlXPathFreeObject to the list, so that exposed
> a bunch more.
>
> -----------------------------------------------------------
> Remove more useless if tests before "free"-like functions.
>
> * build-aux/useless-if-before-free: Rename from ...
> * build-aux/find-unnecessary-if-before-free: ... this.  Remove file.
> Also changed it so that new names are no longer hard-coded in the
> script.  Instead, they're supplied via options:
> * Makefile.cfg (useless_free_options): Define.
> Add xmlXPathFreeObject to the list of free-like functions it detects.
> * Makefile.maint (sc_avoid_if_before_free): Reflect script renaming.
...
> diff --git a/Makefile.maint b/Makefile.maint
> index 923c422..8624328 100644
> --- a/Makefile.maint
> +++ b/Makefile.maint
> @@ -40,7 +40,8 @@ syntax-check: $(local-check)
>  ## --------------- ##
>
>  sc_avoid_if_before_free:
> -	@$(srcdir)/build-aux/find-unnecessary-if-before-free		\
> +	@$(srcdir)/build-aux/useless-if-before-free			\
> +		$(useless_free_options)					\
>  	    $$($(CVS_LIST_EXCEPT)) &&					\
>  	  { echo '$(ME): found useless "if" before "free" above' 1>&2;	\
>  	    exit 1; } || :
> @@ -288,7 +289,7 @@ sc_two_space_separator_in_usage:
>  		1>&2; exit 1; } || :
>
>  err_func_re = \
> -(DISABLE_fprintf|(xmlRpc|vir(Xend|XML|Hash|Conf|Test|LibConn))Error)
> +(DISABLE_fprintf|qemudLog|(xmlRpc|vir(Xend|XML|Hash|Conf|Test|LibConn))Error)

Whoops.
That latter hunk doesn't belong in that patch.
I've just removed it locally.

FYI, I'm in the process of marking-for-translation all qemudLog diagnostics.