test/pthread: fix build of cancellation-points test
test/pthread: fix build of cancellation-points test

Signed-off-by: Austin Foxley <65462a1d10372f5df6b6641242ca623823c369f3@cetoncorp.com>

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