fix the negation overflow in lua #387

Job	Run time
doc_check	4s
doc_check	4s
build_luac_cross_win	31s
build_luac_cross_win	31s
build (51, float)	52s
build (51, float)	52s
luacheck (linux, ubuntu-20.04)	14s
luacheck (linux, ubuntu-20.04)	12s
build (53, float)	59s
build (53, float)	59s
luacheck (windows, windows-latest)	17s
luacheck (windows, windows-latest)	17s
build (51, integral)	55s
build (51, integral)	55s
build (53, 64bit)	56s
build (53, 64bit)	56s
compile_lua_win	0s
compile_lua_win	0s
NTest_win	0s
NTest_win	0s
compile_lua (51, float, cat)	7s
compile_lua (51, float, cat)	7s
NTest (51, float)	3s
NTest (51, float)	3s
compile_lua (53, float, cat)	3s
compile_lua (53, float, cat)	3s
NTest (53, float)	5s
NTest (53, float)	5s
compile_lua (51, integral, grep -v "lua_modules/lm92/lm92.lua\\|lua_modules/hdc1000/HDC1000.lua\\|l...	3s
compile_lua (51, integral, grep -v "lua_modules/lm92/lm92.lua\\|lua_modules/hdc1000/HDC1000.lua\\|l...	3s
NTest (51, integral)	7s
NTest (51, integral)	7s
compile_lua (53, 64bit, cat)	3s
compile_lua (53, 64bit, cat)	3s
NTest (53, 64bit)	4s
NTest (53, 64bit)	4s
	10m 44s

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