X-Git-Url: https://pintos-os.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=src%2Foutput%2Fcharts%2Fscree-cairo.c;h=726e250856e219ebd56d50f9d4083ceaa6ed8be6;hb=refs%2Fheads%2Fmatrix2;hp=db0ce1370fccb36ede5b65c04931d2267bcc2ffa;hpb=aad0ae4913ecd01ccc954f8828623ad5da35cd1b;p=pspp

diff --git a/src/output/charts/scree-cairo.c b/src/output/charts/scree-cairo.c
index db0ce1370f..726e250856 100644
--- a/src/output/charts/scree-cairo.c
+++ b/src/output/charts/scree-cairo.c
@@ -26,10 +26,10 @@
 #define _(msgid) gettext (msgid)
 
 void
-xrchart_draw_scree (const struct chart_item *chart_item, cairo_t *cr,
+xrchart_draw_scree (const struct chart *chart, cairo_t *cr,
                     struct xrchart_geometry *geom)
 {
-  const struct scree *rc = to_scree (chart_item);
+  const struct scree *rc = to_scree (chart);
   size_t i;
   double min, max;
 
@@ -39,13 +39,15 @@ xrchart_draw_scree (const struct chart_item *chart_item, cairo_t *cr,
 
   gsl_vector_minmax (rc->eval, &min, &max);
 
-  if ( fabs (max) > fabs (min))
+  if (fabs (max) > fabs (min))
     max = fabs (max);
   else
     max = fabs (min);
 
-  xrchart_write_yscale (cr, geom, 0, max);
-  xrchart_write_xscale (cr, geom, 0, rc->eval->size + 1);
+  if (! xrchart_write_yscale (cr, geom, 0, max))
+    return;
+  if (! xrchart_write_xscale (cr, geom, 0, rc->eval->size + 1))
+    return;
 
   xrchart_vector_start (cr, geom, "");
   for (i = 0 ; i < rc->eval->size; ++i)