fixing builds on coverity

.travis.yml

@@ -24,10 +24,10 @@ before_install:
    - wget http://security.ubuntu.com/ubuntu/pool/main/c/check/check_0.9.10-6ubuntu3_amd64.deb
    - sudo dpkg -i check_0.9.10-6ubuntu3_amd64.deb
    - sudo pip install cpp-coveralls
+   - export CC=/usr/bin/gcc-4.8
 script: 
    - mkdir build
    - cd build
-   - export CC=/usr/bin/gcc-4.8
    - cmake -DGENERATE_DOCUMENTATION=ON .. 
    - echo "Production build"
    - make