Fix obvious syntax errors (#1262)

* Fix obvious syntax errors
* Remove unused var

Author: qiluo-msft

orchagent/chassisorch.cpp

@@ -51,7 +51,6 @@ void ChassisOrch::doTask(Consumer &consumer)
 {
     SWSS_LOG_ENTER();
 
-    const std::string & tableName = consumer.getTableName();
     auto it = consumer.m_toSync.begin();
     while (it != consumer.m_toSync.end())
     {

orchagent/port.h

@@ -10,6 +10,7 @@ extern "C" {
 #include <vector>
 #include <map>
 #include <bitset>
+#include <unordered_set>
 
 #define DEFAULT_PORT_VLAN_ID    1
 /*

orchagent/portsorch.cpp

@@ -3572,7 +3572,7 @@ bool PortsOrch::removeLagMember(Port &lag, Port &port)
 bool PortsOrch::setCollectionOnLagMember(Port &lagMember, bool enableCollection)
 {
     /* Port must be LAG member */
-    assert(port.m_lag_member_id);
+    assert(lagMember.m_lag_member_id);
 
     sai_status_t status = SAI_STATUS_FAILURE;
     sai_attribute_t attr {};
@@ -3595,7 +3595,7 @@ bool PortsOrch::setCollectionOnLagMember(Port &lagMember, bool enableCollection)
 bool PortsOrch::setDistributionOnLagMember(Port &lagMember, bool enableDistribution)
 {
     /* Port must be LAG member */
-    assert(port.m_lag_member_id);
+    assert(lagMember.m_lag_member_id);
 
     sai_status_t status = SAI_STATUS_FAILURE;
     sai_attribute_t attr {};