SConstruct: use c99
SConstruct: use c99

Some older toolchains do not recognize c11 as a valid standard.
Since the code actually builds well with c99, use that instead.

The only two non-standard features used are // comments
and for(int i ...) declarations in C.

Signed-off-by: Alex Suykov <a2f11805f168ed5e72474ae2d32b7a14940f54cb@gmail.com>
[Retrieved from:
https://git.buildroot.net/buildroot/tree/package/benejson/0001-c-std.patch]
Signed-off-by: Fabrice Fontaine <7d88633730b8b85c1516e612893df72eae9cd341@gmail.com>

codehero/benejson,codehero/benejson,codehero/benejson,codehero/benejson