busybox启动时提示:Bad inittab entry

===================================================================
--- init/init.c (revision 20841)
+++ init/init.c (working copy)
@@ -757,7 +757,7 @@
                /* Skip leading spaces */
                id = skip_whitespace(buf);
                /* Skip the line if it's a comment */
-               if (*id == '#' || *id == '\n')
+               if (*id == '#' || *id == '\n' || (*id == '\0'))
                        continue;
                /* Trim the trailing '\n' */
                *strchrnul(id, '\n') = '\0';
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