Typo.

make-linux.mk

@@ -354,7 +354,7 @@ debian:	FORCE
 	debuild -I -i -us -uc -nc -b
 
 debian-clean: FORCE
-        rm -rf debian/files debian/zerotier-one*.debhelper debian/zerotier-one.substvars debian/*.log debian/zerotier-one
+	rm -rf debian/files debian/zerotier-one*.debhelper debian/zerotier-one.substvars debian/*.log debian/zerotier-one
 
 redhat:	FORCE
 	rpmbuild -ba zerotier-one.spec