[FS#832] GCC 6.X Toolchain compile error

[LEDE Bugs]

The following task has a new comment added:

FS#832 - GCC 6.X Toolchain compile error
User who did this - nouman8 (nouman8)

----------
did some googling and that line
"|| xloc.file == '\0' || xloc.file[0] == '\xff'" 
to
"|| xloc.file[0] == '\0' || xloc.file[0] == '\xff'"

which fixed this error as mention here https://www.viva64.com/en/b/0425/
----------

More information can be found at the following URL:
https://bugs.lede-project.org/index.php?do=details&task_id=832#comment2773