The lua wrapper fails to compile when building against the lua_sandbox

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/work/git/lua_sandbox/release/ep_base/Source/lua_sax/lua/lua_sax.c: In function ‘output_sax’: /work/git/lua_sandbox/release/ep_base/Source/lua_sax/lua/lua_sax.c:347:1: error: control reaches end of non-void function [-Werror=return-type] } ^ /work/git/lua_sandbox/release/ep_base/Source/lua_sax/lua/lua_sax.c: In function ‘serialize_sax’: /work/git/lua_sandbox/release/ep_base/Source/lua_sax/lua/lua_sax.c:324:1: error: control reaches end of non-void function [-Werror=return-type] }