From 4d3054599b888f9f588d8191fcb10951ce1c4d58 Mon Sep 17 00:00:00 2001
From: jean-pierre charras <jp.charras@wanadoo.fr>
Date: Wed, 1 Feb 2017 13:02:08 +0100
Subject: [PATCH] Fix a warning in Debug build on Linux, when there is no
 wizard loaded.

---
 pcbnew/dialogs/dialog_footprint_wizard_list.cpp | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/pcbnew/dialogs/dialog_footprint_wizard_list.cpp b/pcbnew/dialogs/dialog_footprint_wizard_list.cpp
index 0a342c8893..1e32a827d8 100644
--- a/pcbnew/dialogs/dialog_footprint_wizard_list.cpp
+++ b/pcbnew/dialogs/dialog_footprint_wizard_list.cpp
@@ -101,8 +101,12 @@ void DIALOG_FOOTPRINT_WIZARD_LIST::initLists()
     m_footprintGeneratorsGrid->SetSelectionMode( wxGrid::wxGridSelectRows );
 
     int curr_row_cnt = m_footprintGeneratorsGrid->GetNumberRows();
-    m_footprintGeneratorsGrid->DeleteRows( 0, curr_row_cnt );
-    m_footprintGeneratorsGrid->InsertRows( 0, n_wizards );
+
+    if( curr_row_cnt )
+        m_footprintGeneratorsGrid->DeleteRows( 0, curr_row_cnt );
+
+    if( n_wizards )
+        m_footprintGeneratorsGrid->InsertRows( 0, n_wizards );
 
     // Put all wizards in the list
     for( int ii = 0; ii < n_wizards; ii++ )
@@ -139,6 +143,7 @@ void DIALOG_FOOTPRINT_WIZARD_LIST::initLists()
     m_tcSearchPaths->SetValue( message );
     // Display info about scripts: unloadable scripts (due to syntax errors is python source)
     pcbnewGetUnloadableScriptNames( message );
+
     if( message.IsEmpty() )
     {
         m_tcNotLoaded->SetValue( _( "All footprint generator scripts were loaded" ) );