inet: fix getting the nameserver from _res state after res_init.
inet: fix getting the nameserver from _res state after res_init.

Fixes displaying the nameserver in busybox nslookup.

Signed-off-by: Felix Fietkau <118ed6118e893d16e8c6e0776e0ebc290952c897@openwrt.org>
Signed-off-by: Bernhard Reutner-Fischer <ce1ac9e9ad16abccd7821f371ad381197b4768ac@gmail.com>

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