Apply suggestions from code review

Co-authored-by: Boris Zbarsky <bzbarsky@apple.com>

Author: robszewczyk

examples/all-clusters-app/all-clusters-common/src/energy-preference-delegate.cpp

@@ -79,7 +79,7 @@ EPrefDelegate::GetEnergyPriorityAtIndex(chip::EndpointId aEndpoint, size_t aInde
 {
     static EnergyPriorityEnum priorities[] = { EnergyPriorityEnum::kEfficiency, EnergyPriorityEnum::kComfort };
 
-    if (aIndex < (sizeof(priorities) / sizeof(priorities[0])))
+    if (aIndex < ArraySize(priorities))
     {
         priority = priorities[aIndex];
         return CHIP_NO_ERROR;

src/app/clusters/energy-preference-server/energy-preference-server.h

@@ -47,7 +47,7 @@ struct Delegate
      *
      * @param aOutLabel The Label value from BalanceStruct. Storage is
      * provided by the caller, and is large enough to accomodate the
-     * longest label (64 chars), on return the size of the span is
+     * longest label (64 chars), on successful return the size of the span must be
      * adjusted to reflect the length of the value.
      *
      * @return CHIP_ERROR_NOT_FOUND if the index is out of range.
@@ -78,7 +78,7 @@ struct Delegate
      *
      * @param aOutLabel The Label value from BalanceStruct. Storage is
      * provided by the caller, and is large enough to accomodate the
-     * longest label (64 chars), on return the size of the span is
+     * longest label (64 chars), on successful return the size of the span must be
      * adjusted to reflect the length of the value.
      *
      * @return CHIP_ERROR_NOT_FOUND if the index is out of range.