Improve meta/submodules --init

Keep output of git "live" (Meaning that one can see live what submodule
is currently pulled) by not saving it first and then grepping but by
catching a failing grep when the output of git was empty.

meta/submodules

@@ -9,10 +9,9 @@ case "$1" in
 esac
 
 if (( $INIT )); then
-	out="$(git submodule update --init --recursive --jobs 8 --depth 1 2>&1)"
-	if ! (( $? )) && [ -n "$out" ] ; then
-		echo "$out" | grep "Cloning into"
-	fi
+	git submodule update --init --recursive --jobs 8 --depth 1 2>&1 \
+		| grep "Cloning into" \
+		|| ! (( ${PIPESTATUS[0]} ))
 else
 	git submodule update --remote
 fi