[FS#1430] MAP rule parsing incorrectly handles additional FMR rules

[LEDE Bugs]

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FS#1430 - MAP rule parsing incorrectly handles additional FMR rules
User who did this: Hans Dedecker (dedeckeh)
Percent Complete: 0% -> 40%

More information can be found at the following URL:
https://bugs.openwrt.org/index.php?do=details&task_id=1430