Fix mistaken removal of setfilecon

Previous commit attempted to move setfilecon above chown, but mistakenly
squashed libdir and pkgdir setfilcon into one incorrect setfilecon.

Change-Id: I1ad00eae8a0e69ae88ce47cd5571558ce1ad2145
diff --git a/cmds/installd/commands.c b/cmds/installd/commands.c
index 9d0dc53..0d0a6f0 100644
--- a/cmds/installd/commands.c
+++ b/cmds/installd/commands.c
@@ -73,13 +73,20 @@
         return -errno;
     }
 
-    if (selinux_android_setfilecon(libdir, pkgname, uid) < 0) {
+    if (selinux_android_setfilecon(libdir, pkgname, AID_SYSTEM) < 0) {
         ALOGE("cannot setfilecon dir '%s': %s\n", libdir, strerror(errno));
         unlink(libdir);
         unlink(pkgdir);
         return -errno;
     }
 
+    if (selinux_android_setfilecon(pkgdir, pkgname, uid) < 0) {
+        ALOGE("cannot setfilecon dir '%s': %s\n", pkgdir, strerror(errno));
+        unlink(libdir);
+        unlink(pkgdir);
+        return -errno;
+    }
+
     if (chown(pkgdir, uid, gid) < 0) {
         ALOGE("cannot chown dir '%s': %s\n", pkgdir, strerror(errno));
         unlink(libdir);