demo: explicitely set global data as extern
commite42a3bc5112f51902d689f715e28626d3ec0bb31
authorNicola Fontana <ntd@entidi.it>
Tue, 23 Jun 2020 06:27:00 +0000 (23 08:27 +0200)
committerNicola Fontana <ntd@entidi.it>
Tue, 23 Jun 2020 06:27:02 +0000 (23 08:27 +0200)
tree06423da9b0938008efab9495e1f584aff33120da
parent40cf7b37c640eb54f9d951b8c20f2f82d6bf24bc
demo: explicitely set global data as extern

I always thought this was implicitely behavior on header files... before
today.
demo/demo.h