fix(matter): double declaration of ret - var scope issue

Author: SuGlider

libraries/Matter/src/MatterEndpoints/MatterDimmableLight.cpp

@@ -33,7 +33,6 @@ bool MatterDimmableLight::attributeChangeCB(uint16_t endpoint_id, uint32_t clust
   log_d("Dimmable Attr update callback: endpoint: %u, cluster: %u, attribute: %u, val: %u", endpoint_id, cluster_id, attribute_id, val->val.u32);
 
   if (endpoint_id == getEndPointId()) {
-    bool ret = true;
     switch(cluster_id) {
       case OnOff::Id:
         if (attribute_id == OnOff::Attributes::OnOff::Id) {

libraries/Matter/src/MatterEndpoints/MatterOnOffLight.cpp

@@ -34,7 +34,6 @@ bool MatterOnOffLight::attributeChangeCB(uint16_t endpoint_id, uint32_t cluster_
 
   if (endpoint_id == getEndPointId()) {
     log_d("OnOffLight state changed to %d", val->val.b);
-    bool ret = true;
     if (cluster_id == OnOff::Id) {
       if (attribute_id == OnOff::Attributes::OnOff::Id) {
         if (_onChangeOnOffCB != NULL) {