From Debian package 0.0.20080702-6 and 0.2.20100524-3
In russell-20080929.diff

0.0.20080702-6:
  Label /lib/init/rw as var_run_t
  Doesn't seem optimal to me
0.2.20100524-3:
  Label the contents of /lib/init/rw as well

Part to mark var_run_t as a mountpoint type was merged upstream in r2885

Index: policy/modules/kernel/devices.fc
===================================================================
--- policy/modules/kernel/devices.fc.orig
+++ policy/modules/kernel/devices.fc
@@ -6,7 +6,6 @@
 /dev/\.static	-d		gen_context(system_u:object_r:device_t,s0)
 /dev/\.static/dev	-d		gen_context(system_u:object_r:device_t,s0)
 /dev/\.static/dev/(.*)?		<<none>>
-/lib/init/rw           -d      gen_context(system_u:object_r:device_t,s0)
 ')
 /dev/.*				gen_context(system_u:object_r:device_t,s0)
 
Index: policy/modules/kernel/files.fc
===================================================================
--- policy/modules/kernel/files.fc.orig
+++ policy/modules/kernel/files.fc
@@ -256,4 +256,7 @@
 
 ifdef(`distro_debian',`
 /var/run/motd		--	gen_context(system_u:object_r:etc_runtime_t,s0)
+# on Debian /lib/init/rw is a tmpfs used like /var/run but
+# before /var is mounted
+/lib/init/rw(/.*)?			gen_context(system_u:object_r:var_run_t,s0-mls_systemhigh)
 ')