Fix 16-bit disp16 precedence bug in getecommon16o - #1066
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In C, == binds tighter than &, so 'm&7==6' parsed as 'm&(7==6)' = 'm&0' = always false. Disp16 was never fetched for mod==00,rm==110 16-bit addressing (GET_EW16_OFFS), leaving a wrong effective address and unadvanced EIP. Parenthesize as '(m&7)==6' to match getecommon16.
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In C, == binds tighter than &, so 'm&7==6' parsed as 'm&(7==6)' = 'm&0' = always false. Disp16 was never fetched for mod==00,rm==110 16-bit addressing (GET_EW16_OFFS), leaving a wrong effective address and unadvanced EIP. Parenthesize as '(m&7)==6' to match getecommon16.