Fixes possible crash if the last element of the GUI of a screen is a column.

git-svn-id: svn+ssh://svn.code.sf.net/p/supertuxkart/code/trunk/supertuxkart@1314 178a84e3-b1eb-0310-8ba1-8eac791a3b58

src/widget_manager.cpp

@@ -293,8 +293,8 @@ int WidgetManager::calc_width() const
             //Jump to the next line break
             while( i < NUM_ELEMS )
             {
-                ++i;
                 if( m_elems[i].type == ET_BREAK) break;
+                ++i;
             }
             break;
         }
@@ -586,8 +586,8 @@ int WidgetManager::calc_line_width( const int START_ELEM ) const
 
             while( i < NUM_ELEMS )
             {
-                ++i;
                 if( m_elems[i].type == ET_BREAK ) break;
+                ++i;
             }
             break;
         }