#420 flac make check fails on os x

[mark4o]

make check fails, using OS X 10.9.5

$ make check
...
Original file size   441044 bytes.
Compression level 0, file size   421389 bytes.
./test_compression.sh: line 42: let: last_size=: syntax error: operand expected (error token is "=")
make[1]: *** [check] Error 1
make: *** [check-recursive] Error 1
$ 

[Erik]

Fixed in:

commit b147b73eabffadc3dd9384b649309913289d451f
Author: Erik de Castro Lopo <erikd@mega-nerd.com>
Date:   Wed Nov 26 16:20:06 2014 +1100

test/test_compression.sh : Fix for OSX.