Silence more unused exception var warnings

pagelayout_editor/files.cpp

@@ -271,7 +271,7 @@ bool PL_EDITOR_FRAME::SavePageLayoutDescrFile( const wxString& aFullFileName )
         {
             WS_DATA_MODEL::GetTheInstance().Save( tempFile.GetFullPath() );
         }
-        catch( const IO_ERROR& ioe )
+        catch( const IO_ERROR& )
         {
             // In case we started a file but didn't fully write it, clean up
             wxRemoveFile( tempFile.GetFullPath() );

pcbnew/dialogs/dialog_drc.cpp

@@ -205,7 +205,7 @@ void DIALOG_DRC::OnRunDRCClick( wxCommandEvent& aEvent )
     {
         drcTool->GetDRCEngine()->InitEngine( m_brdEditor->GetDesignRulesPath() );
     }
-    catch( PARSE_ERROR& pe )
+    catch( PARSE_ERROR& )
     {
         m_runningResultsBook->ChangeSelection( 0 );   // Display the "Tests Running..." tab
         m_DeleteCurrentMarkerButton->Enable( false );

pcbnew/dialogs/panel_pcbnew_color_settings.cpp

@@ -504,7 +504,7 @@ void PANEL_PCBNEW_COLOR_SETTINGS::createPreviewItems()
     {
         pi.DoLoad( reader, m_preview->GetBoard(), nullptr );
     }
-    catch( const IO_ERROR& ioe )
+    catch( const IO_ERROR& )
     {
         return;
     }

pcbnew/dialogs/panel_setup_rules.cpp

@@ -442,7 +442,7 @@ bool PANEL_SETUP_RULES::TransferDataFromWindow()
             return true;
         }
     }
-    catch( PARSE_ERROR& pe )
+    catch( PARSE_ERROR& )
     {
         // Don't lock them in to the Setup dialog if they have bad rules.  They've already
         // saved them so we can allow an exit.

pcbnew/pcb_edit_frame.cpp

@@ -1041,7 +1041,7 @@ void PCB_EDIT_FRAME::onBoardLoaded()
     {
         drcTool->GetDRCEngine()->InitEngine( GetDesignRulesPath() );
     }
-    catch( PARSE_ERROR& pe )
+    catch( PARSE_ERROR& )
     {
         // Not sure this is the best place to tell the user their rules are buggy, so
         // we'll stay quiet for now.  Feel free to revisit this decision....
@@ -1644,7 +1644,7 @@ void PCB_EDIT_FRAME::CommonSettingsChanged( bool aEnvVarsChanged, bool aTextVars
         drcTool->GetDRCEngine()->InitEngine( GetDesignRulesPath() );
         infobar->Hide();
     }
-    catch( PARSE_ERROR& pe )
+    catch( PARSE_ERROR& )
     {
         wxHyperlinkCtrl* button = new wxHyperlinkCtrl( infobar, wxID_ANY, _( "Edit design rules" ),
                                                        wxEmptyString );

pcbnew/plugins/fabmaster/import_fabmaster.cpp

@@ -153,7 +153,7 @@ FABMASTER::section_type FABMASTER::detectType( size_t aOffset )
     {
         row = rows.at( aOffset );
     }
-    catch( std::out_of_range& e )
+    catch( std::out_of_range& )
     {
         return UNKNOWN_EXTRACT;
     }