Buffer overflow when reading large registers

[dargueta]

The current code for reading a register looks like this:

lua_Unsigned value = 0;
error = uc_reg_read(engine, register_id, &value);

On Lua 5.3, integers are 64 bits, so this will result in a buffer overflow when reading the 128-bit XMMX/YMMX etc. registers on an Intel machine. Similarly, reading a 64-bit register on any 32-bit Lua installation will also result in a buffer overflow.

[dargueta]

Partially solved by b0e36de; reads now use uint_least64_t so reading 64-bit registers is guaranteed to be fine, even on 32-bit versions of Lua. On systems where uint_least64_t is larger than 64 bits, reads up to that width will be fine too.