Fix minor compil warnings

eeschema/erc_item.cpp

@@ -292,7 +292,7 @@ void ERC_TREE_MODEL::GetValue( wxVariant& aVariant, wxDataViewItem const& aItem,
     wxString                  msg;
 
     auto getItemDesc =
-            [&]( EDA_ITEM* aItem, SCH_SHEET_PATH& aSheet )
+            [&]( EDA_ITEM* aCurrItem, SCH_SHEET_PATH& aSheet )
             {
                 SCH_SHEET_PATH curSheet = schEditFrame->GetCurrentSheet();
                 wxString       desc;
@@ -300,12 +300,12 @@ void ERC_TREE_MODEL::GetValue( wxVariant& aVariant, wxDataViewItem const& aItem,
                 if( aSheet != curSheet )
                 {
                     aSheet.UpdateAllScreenReferences();
-                    desc = aItem->GetItemDescription( m_editFrame );
+                    desc = aCurrItem->GetItemDescription( m_editFrame );
                     curSheet.UpdateAllScreenReferences();
                 }
                 else
                 {
-                    desc = aItem->GetItemDescription( m_editFrame );
+                    desc = aCurrItem->GetItemDescription( m_editFrame );
                 }
 
                 return desc;

pcbnew/router/pns_joint.h

@@ -231,7 +231,7 @@ public:
         return m_tag.pos;
     }
 
-    int Net() const
+    int Net() const override
     {
         return m_tag.net;
     }