Fix warning

[Andreas Jaeger]

This fixes:
res_comp.c:155:6: warning: variable ‘ppch’ set but not used [-Wunused-but-set-
variable]

Andreas

2011-07-05  Andreas Jaeger  <aj@suse.de>

	* resolv/res_comp.c (libresolv_hidden_def): Remove unused
	variable.

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