--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mozilla-alsa-sandbox.patch	Wed Feb 07 19:42:16 2018 +0100
@@ -0,0 +1,12 @@
+--- mozilla/security/sandbox/linux/moz.build	2018-02-06 07:58:27.127145777 +0100
++++ mozilla/security/sandbox/linux/moz.build	2018-02-06 08:01:22.213706297 +0100
+@@ -77,6 +77,9 @@
+         'SandboxOpenedFiles.cpp',
+     ]
+ 
++if CONFIG['MOZ_ALSA']:
++    DEFINES['MOZ_ALSA'] = True
++
+ # This copy of SafeSPrintf doesn't need to avoid the Chromium logging
+ # dependency like the one in libxul does, but this way the behavior is
+ # consistent.  See also the comment in SandboxLogging.h.