Dummy out -Werror from travis config

.travis.yml

@@ -660,7 +660,7 @@ before_script:
   - mkdir build
   - cd build
   - mkdir package
-  - export CFLAGS="-Wall -W -Werror $WFLAGS"
+  - export CFLAGS="-Wall -W $WFLAGS" # -Werror
   - export CCACHE_COMPRESS=true
   - cmake .. -DCMAKE_BUILD_TYPE=Release -DCMAKE_INSTALL_PREFIX=$PWD/bin -DCPACK_PACKAGE_DIRECTORY=$PWD/package
       -DSRB2_ASSET_REQUIRED="${SRB2_ASSET_REQUIRED}" -DSRB2_ASSET_OPTIONAL="${SRB2_ASSET_OPTIONAL}"