Fix bit32 conversion issues for Lua 5.1 on 32 bitv0.10

The default unsigned conversion procedure from upstream using
`lua_Integer` as an intermediate value fails if `lua_Integer` has only
32 bits (as is the case on 32 bit Lua 5.1). This fix uses a `lua_Number`
(hopefully double) as intermediate value in those cases.

1 files changed, 1 insertions, 0 deletions

diff --git a/tests/test-bit32.lua b/tests/test-bit32.lua
index cc91e52..a408b7d 100755
--- a/tests/test-bit32.lua
+++ b/tests/test-bit32.lua
@@ -4,6 +4,7 @@ local bit32 = require("bit32")
 
 
 assert(bit32.bnot(0) == 2^32-1)
+assert(bit32.bnot(-1) == 0)
 assert(bit32.band(1, 3, 5) == 1)
 assert(bit32.bor(1, 3, 5) == 7)