Fix compilation with GCC-7 and latest RoaringBitmap code (#1886)

Latest RoaringBitmap version (introduced with bf413afb) triggers a new
warning with GCC-7:

```
ivan@ivan-Latitude-E6540:~/svnrepos/nDPI(dev)$ CC=gcc-7 CXX=g++-7 ./autogen.sh && make -s
autoreconf: Entering directory `.'
[...]
third_party/src/roaring.c:1815:1: warning: ‘no_sanitize’ attribute directive ignored [-Wattributes]
 static inline int array_container_cardinality(const array_container_t *array) {
 ^~~~~~
third_party/src/roaring.c:1964:5: warning: ‘no_sanitize’ attribute directive ignored [-Wattributes]
     const array_container_t *container2) {
[..]
```

The core issue is that `no_sanitize` attribute is defined only for GCC
>= 8.
That breaks the CI since we still use GCC-7 and `-Werror`: add a simple
workaround.

Fix compilation on Windows

0 files changed, 0 insertions, 0 deletions