malloc: simplify MAP_UNINITIALIZE ifdef logic
malloc: simplify MAP_UNINITIALIZE ifdef logic

Signed-off-by: Mike Frysinger <8f3f75c74bd5184edcfa6534cab3c13a00a2f794@gentoo.org>

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