aom: new musl-only patch to set min thread stack size

The aom dependency implemented a minimum stack size for
debugging purposes in v3.8.0. This patch enables it for
production use, reducing the minimum from 1MB to 256 KB.

The previous patch was temporarily removed in de30aa6.

build/lin.sh

@@ -252,7 +252,7 @@ $CURL https://storage.googleapis.com/aom-releases/libaom-${VERSION_AOM}.tar.gz |
 cd ${DEPS}/aom
 if [ "${PLATFORM%-*}" == "linuxmusl" ]; then
   # https://bugs.chromium.org/p/aomedia/issues/detail?id=2754
-  : # $CURL https://git.alpinelinux.org/aports/plain/main/aom/fix-stack-size-e53da0b.patch | patch -p1 # TODO: requires updated patch
+  $CURL https://gist.github.com/lovell/3e70b51079af2c9b78e5a0e6f6ad0e59/raw/92864bf57345f57cf32307dd3b399a6bd430b78e/aom-ensure-thread-stack-size-is-at-least-256-KB.patch | patch -p1
 fi
 mkdir aom_build
 cd aom_build