Partial fix for PR 12859.

[pspp-builds.git] / src / box-whisker.c

diff --git a/src/box-whisker.c b/src/box-whisker.c
index 773de80984d4405d74d6af6f4b661f5631a7d633..f634c2850c6058c0c010768fc7f8fce021374ce0 100644 (file)
--- a/src/box-whisker.c
+++ b/src/box-whisker.c
@@ -14,8 +14,8 @@
 
    You should have received a copy of the GNU General Public License
    along with this program; if not, write to the Free Software
-   Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
-   02111-1307, USA. */
+   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+   02110-1301, USA. */
 
 
 #include "chart.h"
@@ -212,6 +212,9 @@ boxplot_draw_yscale(struct chart *ch , double y_max, double y_min)
   double y_tick;
   double d;
 
+  if ( !ch ) 
+     return ;
+
   ch->y_max  = y_max;
   ch->y_min  = y_min;