Regression after adding Nop skipping

[tomsons26]

With x86 #3 ends up stripping a long jump e9 00 00 00 00

Is it only MIPS that has nops as 0s? 0's are valid in X86, two 0s disassemble as add byte ptr [eax], al
For x86 this should skip every byte that's 0x90 instead

Looks like PPC also regresses #227 (point 2)