getprotoent_r: use correct define for return value
getprotoent_r: use correct define for return value

Doesn't correctly set result=NULL on error or EOF.

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

atgreen/uClibc-moxie,skristiansson/uClibc-or1k,ddcc/klee-uclibc-0.9.33.2,foss-for-synopsys-dwc-arc-processors/uClibc,foss-xtensa/uClibc,kraj/uclibc-ng,kraj/uClibc,m-labs/uclibc-lm32,mephi42/uClibc,mephi42/uClibc,m-labs/uclibc-lm32,wbx-github/uclibc-ng,hjl-tools/uClibc,waweber/uclibc-clang,hwoarang/uClibc,groundwater/uClibc,ddcc/klee-uclibc-0.9.33.2,hwoarang/uClibc,hjl-tools/uClibc,ndmsystems/uClibc,hjl-tools/uClibc,kraj/uClibc,czankel/xtensa-uclibc,skristiansson/uClibc-or1k,kraj/uclibc-ng,groundwater/uClibc,ffainelli/uClibc,atgreen/uClibc-moxie,majek/uclibc-vx32,ndmsystems/uClibc,OpenInkpot-archive/iplinux-uclibc,foss-xtensa/uClibc,OpenInkpot-archive/iplinux-uclibc,wbx-github/uclibc-ng,ddcc/klee-uclibc-0.9.33.2,OpenInkpot-archive/iplinux-uclibc,skristiansson/uClibc-or1k,waweber/uclibc-clang,foss-for-synopsys-dwc-arc-processors/uClibc,atgreen/uClibc-moxie,atgreen/uClibc-moxie,OpenInkpot-archive/iplinux-uclibc,majek/uclibc-vx32,ysat0/uClibc,m-labs/uclibc-lm32,ysat0/uClibc,mephi42/uClibc,kraj/uClibc,brgl/uclibc-ng,mephi42/uClibc,brgl/uclibc-ng,czankel/xtensa-uclibc,ffainelli/uClibc,kraj/uclibc-ng,skristiansson/uClibc-or1k,waweber/uclibc-clang,ffainelli/uClibc,wbx-github/uclibc-ng,foss-for-synopsys-dwc-arc-processors/uClibc,majek/uclibc-vx32,groundwater/uClibc,kraj/uclibc-ng,majek/uclibc-vx32,kraj/uClibc,foss-xtensa/uClibc,ndmsystems/uClibc,ddcc/klee-uclibc-0.9.33.2,groundwater/uClibc,czankel/xtensa-uclibc,ndmsystems/uClibc,m-labs/uclibc-lm32,hwoarang/uClibc,ffainelli/uClibc,hjl-tools/uClibc,brgl/uclibc-ng,hjl-tools/uClibc,waweber/uclibc-clang,brgl/uclibc-ng,groundwater/uClibc,ffainelli/uClibc,ysat0/uClibc,czankel/xtensa-uclibc,foss-for-synopsys-dwc-arc-processors/uClibc,wbx-github/uclibc-ng,ysat0/uClibc,hwoarang/uClibc,foss-xtensa/uClibc