temp/mesa-purism-gc7000: use _commit as variable name (!565)

temp/mesa-purism-gc7000/APKBUILD

@@ -3,7 +3,7 @@ pkgname=mesa-purism-gc7000
 provides=mesa
 pkgver=19.0.0_git20190403
 pkgrel=0
-_sha="d6d5b5401ea604dc2e5e5c3ef50d7df2ff4a6f38"
+_commit="d6d5b5401ea604dc2e5e5c3ef50d7df2ff4a6f38"
 pkgdesc="Mesa DRI OpenGL library"
 url="https://www.mesa3d.org"
 arch="aarch64"
@@ -52,7 +52,7 @@ makedepends="
 	ninja
 	"
 source="
-	https://source.puri.sm/guido.gunther/mesa/-/archive/${_sha}/mesa-${_sha}.tar.gz
+	https://source.puri.sm/guido.gunther/mesa/-/archive/${_commit}/mesa-${_commit}.tar.gz
 	10-adjust-cache-deflate-buffer.patch
 	20-musl.patch
 	meson-add-toggle-for-TLS-support-in-GLX.patch
@@ -66,7 +66,7 @@ _gallium_drivers="swrast,kmsro,etnaviv"
 _vulkan_drivers=""
 _arch_opts=
 
-builddir="$srcdir/mesa-${_sha}"
+builddir="$srcdir/mesa-${_commit}"
 
 
 build() {