Factor out pcrelOffset call

Author: int3

lld/MachO/Arch/X86_64.cpp

@@ -82,17 +82,23 @@ int64_t X86_64::getEmbeddedAddend(MemoryBufferRef mb, uint64_t offset,
                                   relocation_info rel) const {
   auto *buf = reinterpret_cast<const uint8_t *>(mb.getBufferStart());
   const uint8_t *loc = buf + offset + rel.r_address;
+  int64_t addend;
 
   switch (rel.r_length) {
   case 0:
-    return *loc + pcrelOffset(rel.r_type);
+    addend = *loc;
+    break;
   case 2:
-    return static_cast<int32_t>(read32le(loc)) + pcrelOffset(rel.r_type);
+    addend = static_cast<int32_t>(read32le(loc));
+    break;
   case 3:
-    return read64le(loc) + pcrelOffset(rel.r_type);
+     addend = read64le(loc);
+     break;
   default:
     llvm_unreachable("invalid r_length");
   }
+
+  return addend + pcrelOffset(rel.r_type);
 }
 
 void X86_64::relocateOne(uint8_t *loc, const Reloc &r, uint64_t value,