Fix non-functional init_opts parameter, bug #422471

If INIT_OPTS='' is not specified before the argument loop, scoping rules
will prevent it from being seen by the switch_root invocation.

Signed-off-by: Toralf Förster <toralf.foerster@gmx.de>
Signed-off-by: Richard Yao <ryao@gentoo.org>

defaults/linuxrc

@@ -38,6 +38,7 @@ CMDLINE=$(cat /proc/cmdline)
 FAKE_ROOT=''
 FAKE_INIT=''
 REAL_ROOTFLAGS=''
+INIT_OPTS=''
 ROOTFSTYPE='auto'
 CRYPT_SILENT=0