HBASE-26086 TestHRegionReplayEvents do not pass in branch-2 and throw…

…s NullPointerException (#3480)

Signed-off-by: Duo Zhang <zhangduo@apache.org>
Signed-off-by: Anoop Sam John <anoopsamjohn@apache.org>
Signed-off-by: Reid Chan <reidchan@apache.org>

hbase-server/src/main/java/org/apache/hadoop/hbase/regionserver/HRegion.java

@@ -7672,7 +7672,7 @@ void metricsUpdateForGet(List<Cell> results, long before) {
     if (this.metricsRegion != null) {
       this.metricsRegion.updateGet(EnvironmentEdgeManager.currentTime() - before);
     }
-    if (rsServices != null) {
+    if (rsServices != null && this.rsServices.getMetrics() != null) {
       rsServices.getMetrics().updateReadQueryMeter(getTableDescriptor().getTableName(), 1);
     }
   }