restorecon /data/media when re-creating it for multi-user upgrade.

Change-Id: I112c61863f2104d1962697c54cff25106e9b48a0
Signed-off-by: Stephen Smalley <sds@tycho.nsa.gov>
diff --git a/cmds/installd/installd.c b/cmds/installd/installd.c
index f52cee0..0c80dac 100644
--- a/cmds/installd/installd.c
+++ b/cmds/installd/installd.c
@@ -392,6 +392,10 @@
             goto fail;
         }
 
+        if (selinux_android_restorecon(android_media_dir.path)) {
+            goto fail;
+        }
+
         // /data/media/0
         char owner_media_dir[PATH_MAX];
         snprintf(owner_media_dir, PATH_MAX, "%s0", android_media_dir.path);