[FS#1521] Option persist in /etc/config/network is not working.

[LEDE Bugs]

The following task has a new comment added:

FS#1521 - Option persist in /etc/config/network is not working.
User who did this - zxf8692 (zxf8692)

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I had a mistake, it's double quotation marks，not quota.

line 105 :
original: [ "${persist}" -lt 1 ] && persist="nopersist" || persist="persist"
fixed: [ ${persist} -lt 1 ] && persist="nopersist" || persist="persist"
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More information can be found at the following URL:
https://bugs.openwrt.org/index.php?do=details&task_id=1521#comment4671