[glom] Remove unnecessary switch breaks after returns.

[Murray Cumming <murrayc src gnome org>]

commit b7941165c777c31907482da91cea8783622f0546
Author: Murray Cumming <murrayc murrayc com>
Date:   Fri Oct 30 13:27:32 2015 +0100

    Remove unnecessary switch breaks after returns.
    
    Found by cppcheck.

 glom/libglom/data_structure/field.cc               |    4 ----
 glom/utility_widgets/canvas/canvas_item_movable.cc |    2 --
 2 files changed, 0 insertions(+), 6 deletions(-)
---
diff --git a/glom/libglom/data_structure/field.cc b/glom/libglom/data_structure/field.cc
index 247b562..5f7a5bc 100644
--- a/glom/libglom/data_structure/field.cc
+++ b/glom/libglom/data_structure/field.cc
@@ -428,8 +428,6 @@ Glib::ustring Field::sql_find(const Gnome::Gda::Value& value, const Glib::RefPtr
         return "''"; //We want to ignore the concept of NULL strings, and deal only with empty strings.
       else
         return ("%" + value.to_string() + "%"); //TODO: Escape it before adding "%", but then prevent 
SqlBuilder from re-escaping it.
-        
-      break;
     }
     case(glom_field_type::DATE):
     case(glom_field_type::TIME):
@@ -438,7 +436,6 @@ Glib::ustring Field::sql_find(const Gnome::Gda::Value& value, const Glib::RefPtr
     default:
     {
       return sql(value, connection);
-      break;
     }
   }
 }
@@ -463,7 +460,6 @@ Gnome::Gda::SqlOperatorType Field::sql_find_operator() const
     default:
     {
       return Gnome::Gda::SQL_OPERATOR_TYPE_EQ;
-      break;
     }
   }
 }
diff --git a/glom/utility_widgets/canvas/canvas_item_movable.cc 
b/glom/utility_widgets/canvas/canvas_item_movable.cc
index 50dac4c..e01f6ed 100644
--- a/glom/utility_widgets/canvas/canvas_item_movable.cc
+++ b/glom/utility_widgets/canvas/canvas_item_movable.cc
@@ -112,13 +112,11 @@ bool CanvasItemMovable::on_button_press_event(const Glib::RefPtr<Goocanvas::Item
         m_shift_click = true;
 
       return true; // Handled.
-      break;
     }
     case 3:
     {
       m_signal_show_context.emit(event->button, event->time);
       return false; // Not fully Handled.
-      break;
     }
     default:
       break;