Add a cast to void when checking for FRUIT_HAS_CXA_DEMANGLE, otherwise with -Werror this check won't compile and we would incorrectly detect FRUIT_HAS_CXA_DEMANGLE=0 aven if it's available.
Add a cast to void when checking for FRUIT_HAS_CXA_DEMANGLE, otherwise with -Werror this check won't compile and we would incorrectly detect FRUIT_HAS_CXA_DEMANGLE=0 aven if it's available.

google/fruit,google/fruit,google/fruit