ubsan: i386-dis.c

ubsan: i386-dis.c

i386-dis.c:12207 left shift of 128 by 24 places cannot be represented in type 'long int'
i386-dis.c:12220 left shift of 128 by 24 places cannot be represented in type 'long int'
i386-dis.c:12222 left shift of 1 by 31 places cannot be represented in type 'long int'
i386-dis.c:12222 signed integer overflow: 162254319 - -2147483648 cannot be represented in type 'long int'

	* i386-dis.c (OP_E_memory): Don't cast to signed type when
	negating.
	(get32, get32s): Use unsigned types in shift expressions.