Pcbnew bug and warning fixes.

* Fixed a bug in PCB_EDIT_FRAME::loadFootprints when no footprint libraries
  are found when attempting to load footprints.
* Add a warning to PCB_EDIT_FRAME::loadFootprints to inform the user when
  a footprint library file cannot be found in any of the standard library
  search paths.
* Changed FOOTPRINT_INFO::m_padCount to unsigned to prevent signed/unsigned
  comparison compiler warnings.
* Put NestedSpace() function in netlist_reader.cpp inside conditional debug
  build statement to prevent warning in release builds.

include/footprint_info.h

@@ -23,7 +23,7 @@ public:
     int       m_Num;        ///< Order number in the display list.
     wxString  m_Doc;        ///< Footprint description.
     wxString  m_KeyWord;    ///< Footprint key words.
-    int       m_padCount;   ///< Number of pads
+    unsigned  m_padCount;   ///< Number of pads
 
     FOOTPRINT_INFO()
     {
@@ -80,7 +80,7 @@ public:
      */
     void AddItem( FOOTPRINT_INFO* aItem )
     {
-        m_List.push_back( aItem);
+        m_List.push_back( aItem );
     }
 
     /**

pcbnew/netlist.cpp

@@ -188,7 +188,7 @@ void PCB_EDIT_FRAME::loadFootprints( NETLIST& aNetlist, REPORTER* aReporter )
         else
             fpOnBoard = m_Pcb->FindModule( aNetlist.GetComponent( ii )->GetReference() );
 
-        loadFootprint = (fpOnBoard != NULL) &&
+        loadFootprint = (fpOnBoard == NULL) ||
                         (fpOnBoard->GetPath() != component->GetFootprintName());
 
         if( loadFootprint && (component->GetFootprintName() != lastFootprintLibName) )
@@ -203,7 +203,17 @@ void PCB_EDIT_FRAME::loadFootprints( NETLIST& aNetlist, REPORTER* aReporter )
                 libPath = wxGetApp().FindLibraryPath( fn );
 
                 if( !libPath )
+                {
+                    if( aReporter )
+                    {
+                        msg.Printf( _( "*** Warning: Cannot find footprint library file \"%s\" "
+                                       "in any of the standard KiCad library search paths. ***\n" ),
+                                    GetChars( fn.GetFullPath() ) );
+                        aReporter->Report( msg );
+                    }
+
                     continue;
+                }
 
                 module = pi->FootprintLoad( libPath, component->GetFootprintName() );
 
@@ -238,7 +248,7 @@ void PCB_EDIT_FRAME::loadFootprints( NETLIST& aNetlist, REPORTER* aReporter )
             module = new MODULE( *module );
         }
 
-        wxASSERT( module != NULL );
-        component->SetModule( module );
+        if( loadFootprint && module != NULL )
+            component->SetModule( module );
     }
 }

pcbnew/netlist_reader.cpp

@@ -37,6 +37,7 @@
 #include <wx/regex.h>
 
 
+#if defined(DEBUG)
 /**
  * Function NestedSpace
  * outputs nested space for pretty indenting.
@@ -53,7 +54,6 @@ static REPORTER& NestedSpace( int aNestLevel, REPORTER& aReporter )
 }
 
 
-#if defined(DEBUG)
 void COMPONENT_NET::Show( int aNestLevel, REPORTER& aReporter )
 {
     NestedSpace( aNestLevel, aReporter );