PPC: Cleanup ABI-specifc code.

src/ppc/disasm-ppc.cc

Index: src/ppc/disasm-ppc.cc
diff --git a/src/ppc/disasm-ppc.cc b/src/ppc/disasm-ppc.cc
index d9450f8a4220095ed332b4bec6012afc99c681d6..e72658fba7c13f0552ce379874138670eb18b69e 100644
--- a/src/ppc/disasm-ppc.cc
+++ b/src/ppc/disasm-ppc.cc
@@ -1073,14 +1073,12 @@ int Decoder::InstructionDecode(byte* instr_ptr) {
   out_buffer_pos_ += SNPrintF(out_buffer_ + out_buffer_pos_, "%08x       ",
                               instr->InstructionBits());
 
-#if ABI_USES_FUNCTION_DESCRIPTORS
-  // The first field will be identified as a jump table entry.  We emit the rest
-  // of the structure as zero, so just skip past them.
-  if (instr->InstructionBits() == 0) {
+  if (ABI_USES_FUNCTION_DESCRIPTORS && instr->InstructionBits() == 0) {
+    // The first field will be identified as a jump table entry.  We
+    // emit the rest of the structure as zero, so just skip past them.
     Format(instr, "constant");
     return Instruction::kInstrSize;
   }
-#endif
 
   switch (instr->OpcodeValue() << 26) {
     case TWI: {