Allows instructions which no explicit operands. e.g. X86 RET which has but an implicit flag operand.
Allows instructions which no explicit operands. e.g. X86 RET which has but
an implicit flag operand.


git-svn-id: 0ff597fd157e6f4fc38580e8d64ab130330d2411@24916 91177308-0d34-0410-b5e6-96231b3b80d8

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