Fix error that caused seek format operations to set max file size to '1' or '0'

Fix error that caused seek format operations to set max file size to '1' or '0'

A very inappropriate placement of a ')' (introduced in r362151) caused the
maximum size of a file to be set as the result of a comparison operation, as
opposed to the result of the ftello operation.  This resulted in seeking being
restricted to the beginning of the file, or 1 byte into the file.  Thanks to
the Asterisk Test Suite for properly freaking out about this on at least one
test.

(issue ASTERISK-19655)
Reported by: Matt Jordan
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Merged revisions 362304 from http://svn.asterisk.org/svn/asterisk/branches/1.8
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Merged revisions 362305 from http://svn.asterisk.org/svn/asterisk/branches/10

git-svn-id: https://origsvn.digium.com/svn/asterisk/trunk@362306 65c4cc65-6c06-0410-ace0-fbb531ad65f3