fix minor compil warnings

pcbnew/plugins/kicad/pcb_plugin.cpp

@@ -1754,7 +1754,7 @@ void PCB_PLUGIN::format( const PAD* aPad, int aNestLevel ) const
 
                     m_out->Print( nested_level, "(gr_poly\n" );
                     formatPolyPts( outline, nested_level, ADVANCED_CFG::GetCfg().m_CompactSave );
-                    m_out->Print( nested_level, "" );  // just to align the next info at the right place
+                    m_out->Print( nested_level, " " );  // just to align the next info at the right place
                 }
                 break;
 

pcbnew/tools/pcb_control.cpp

@@ -1250,9 +1250,9 @@ int PCB_CONTROL::UpdateMessagePanel( const TOOL_EVENT& aEvent )
     if( pcbFrame && selection.GetSize() == 2 )
     {
         auto clearanceString =
-                [&]( const DRC_CONSTRAINT& constraint )
+                [&]( const DRC_CONSTRAINT& curr_constraint )
                 {
-                    return StringFromValue( units, constraint.m_Value.Min(), true );
+                    return StringFromValue( units, curr_constraint.m_Value.Min(), true );
                 };
 
         BOARD_ITEM* a = static_cast<BOARD_ITEM*>( selection[0] );