sparc/sigaction.c: note possible bugs by comments. style fixes
sparc/sigaction.c: note possible bugs by comments. style fixes

no code is actually changed

Signed-off-by: Denys Vlasenko <42afb3a19136e88700e8b77002ea6a5a94c16782@googlemail.com>

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