inet: res_nclose: free user-buffer, not global _res
inet: res_nclose: free user-buffer, not global _res

In res_iclose we were operating on the global _res even if called via
res_nclose where we are supposed to operate on the user provided
res_state.

Signed-off-by: Bernhard Reutner-Fischer <ce1ac9e9ad16abccd7821f371ad381197b4768ac@gmail.com>

brgl/uclibc-ng,majek/uclibc-vx32,majek/uclibc-vx32,hjl-tools/uClibc,waweber/uclibc-clang,groundwater/uClibc,kraj/uClibc,majek/uclibc-vx32,ffainelli/uClibc,waweber/uclibc-clang,waweber/uclibc-clang,ffainelli/uClibc,wbx-github/uclibc-ng,majek/uclibc-vx32,kraj/uclibc-ng,foss-for-synopsys-dwc-arc-processors/uClibc,groundwater/uClibc,ffainelli/uClibc,ddcc/klee-uclibc-0.9.33.2,foss-xtensa/uClibc,hjl-tools/uClibc,wbx-github/uclibc-ng,brgl/uclibc-ng,mephi42/uClibc,ffainelli/uClibc,mephi42/uClibc,foss-xtensa/uClibc,groundwater/uClibc,ddcc/klee-uclibc-0.9.33.2,kraj/uclibc-ng,hjl-tools/uClibc,foss-for-synopsys-dwc-arc-processors/uClibc,kraj/uClibc,ffainelli/uClibc,ddcc/klee-uclibc-0.9.33.2,kraj/uclibc-ng,kraj/uClibc,foss-for-synopsys-dwc-arc-processors/uClibc,ddcc/klee-uclibc-0.9.33.2,brgl/uclibc-ng,wbx-github/uclibc-ng,foss-xtensa/uClibc,hjl-tools/uClibc,wbx-github/uclibc-ng,brgl/uclibc-ng,groundwater/uClibc,waweber/uclibc-clang,mephi42/uClibc,foss-for-synopsys-dwc-arc-processors/uClibc,kraj/uClibc,foss-xtensa/uClibc,groundwater/uClibc,hjl-tools/uClibc,mephi42/uClibc,kraj/uclibc-ng