under intel style, Invalid operand (KS_ERR_ASM_INVALIDOPERAND) when same Label is accessed second time.

[bbqz007]

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code generated by gcc

	.align 4
_MessageBoxA:
	.long	19089016
LC0:
	.ascii "\0"
	push	ebp
	mov	ebp, esp
	sub	esp, 24
	mov	eax, DWORD PTR _MessageBoxA
	mov	ecx, OFFSET FLAT:LC0   ;  OK
	mov	edx, OFFSET FLAT:LC0   ;  Not Fine
	mov	DWORD PTR [esp+12], 0
	mov	DWORD PTR [esp+8], ecx  
	mov	DWORD PTR [esp+4], edx  
	mov	DWORD PTR [esp], 0
	call	eax
	nop
	leave
	ret

the first time, mov ecx, OFFSET FLAT:LC0 is ok

then the second time accession to LC0, mov edx, OFFSET FLAT:LC0 is not fine. it throws Invalid operand (KS_ERR_ASM_INVALIDOPERAND)

i try assemble the partial codes by increasing one line every time. and address wrong spot where it accesses to LC0 second time.

my using keystone is 0.92 from pypi.