kwiberg 388fe425c7 Make WARN_UNUSED_RESULT a no-op on gcc
Because on gcc, cast to void doesn't silence the warning. See
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66425

Also add an RTC_ prefix to the macro instead of only defining it if it
wasn't already defined, to ensure that we always get our own version.

BUG=none

Review-Url: https://codereview.webrtc.org/2797983003
Cr-Commit-Position: refs/heads/master@{#17563}
2017-04-06 11:32:27 +00:00
..
2015-04-02 10:31:00 +00:00
2016-12-14 23:03:11 +00:00
2016-12-14 23:03:11 +00:00
2015-12-28 22:07:05 +00:00
2015-12-28 22:07:05 +00:00
2016-08-16 13:38:23 +00:00
2017-03-27 11:37:14 +00:00
2017-03-27 11:37:14 +00:00
2016-07-01 10:45:29 +00:00
2016-02-02 16:34:16 +00:00
2017-03-15 11:36:29 +00:00
2017-03-15 11:36:29 +00:00
2017-03-29 09:32:36 +00:00
2017-03-29 09:32:36 +00:00
2016-10-03 07:30:08 +00:00