Don't need to UpdateFilesByCompactionPri for kCompactionStyleNone

Summary: Closes https://github.com/facebook/rocksdb/pull/3563

Differential Revision: D7154653

Pulled By: ajkr

fbshipit-source-id: 4f32fb1b02451a934504c40be22b07fb1f2deb9c

db/version_set.cc

@@ -1754,7 +1754,8 @@ void SortFileByOverlappingRatio(
 
 void VersionStorageInfo::UpdateFilesByCompactionPri(
     CompactionPri compaction_pri) {
-  if (compaction_style_ == kCompactionStyleFIFO ||
+  if (compaction_style_ == kCompactionStyleNone ||
+      compaction_style_ == kCompactionStyleFIFO ||
       compaction_style_ == kCompactionStyleUniversal) {
     // don't need this
     return;