Bug 1410456 - Update cubeb from upstream to eb3409e.r=achronop

MozReview-Commit-ID: Ie9hhw1Prlw

--HG--
extra : rebase_source : 0e27932b3d22cf816a045b2fd4929d957a5684d6

media/libcubeb/README_MOZILLA

@@ -5,4 +5,4 @@ Makefile.in build files for the Mozilla build system.
 
 The cubeb git repository is: git://github.com/kinetiknz/cubeb.git
 
-The git commit ID used was 1d53c3a3779cbeb860b16aa38cc7f51e196b9745 (2018-02-13 12:30:46 +1000)
+The git commit ID used was eb3409e201daaaf03401ff234de5e1f69ba10c8d (2018-03-01 13:31:19 +0100)