Revert "makepkg: Exit on failure within build() or package() functions"

As reported in FS#15210, we have some problems with split packages and
variable overrides because of this patch. For now, in prep for a release, it
is best to back it out and see what we can do later.

This reverts commit 621aa26e26.

Signed-off-by: Dan McGee <dan@archlinux.org>

scripts/makepkg.sh.in

@@ -718,10 +718,8 @@ run_build() {
 
 		build 2>&1 | tee "$BUILDLOG"; ret=${PIPESTATUS[0]}
 	else
-		# piping to cat ensures makepkg fails on any build error
-		build 2>&1 | cat -; ret=${PIPESTATUS[0]}
+		build 2>&1 || ret=$?
 	fi
-
 	# reset our shell options
 	eval "$shellopts"
 
@@ -774,12 +772,12 @@ run_package() {
 		exec 3>&1
 		tee "$BUILDLOG" < "$logpipe" &
 		exec 1>"$logpipe" 2>"$logpipe"
-		$pkgfunc 2>&1 | cat -; ret=${PIPESTATUS[0]}
+		$pkgfunc 2>&1 || ret=$?
 		sync
 		exec 1>&3 2>&3 3>&-
 		rm "$logpipe"
 	else
-		$pkgfunc 2>&1 | cat -; ret=${PIPESTATUS[0]}
+		$pkgfunc 2>&1 || ret=$?
 	fi
 
 	if [ $ret -gt 0 ]; then