[PATCH liburing 6/7] .travis.yml: Change the language from C to C++

[Bart Van Assche <bvanassche@xxxxxxx>]

This causes Travis to set both the CC and CXX environment variables instead
of only CC.

Signed-off-by: Bart Van Assche <bvanassche@xxxxxxx>
---
 .travis.yml | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/.travis.yml b/.travis.yml
index 7ed15c7ab142..69da3c07df7d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -1,4 +1,4 @@
-language: c
+language: cpp
 os:
   - linux
 compiler: