[FS#1283] block info returns additional charactes in FAT32 label name

[LEDE Bugs]

The following task has a new comment added:

FS#1283 - block info returns additional charactes in FAT32 label name
User who did this - john (john)

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try this patch please
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https://bugs.lede-project.org/index.php?do=details&task_id=1283#comment4145