[goffice] Regression: plug leak.

[Morten Welinder <mortenw src gnome org>]

commit 4fb4c3aa158b0480242f1f0909eb12d87a4617a9
Author: Morten Welinder <terra gnome org>
Date:   Sun Oct 28 17:37:37 2012 -0400

    Regression: plug leak.

 ChangeLog                    |    5 ++++-
 goffice/math/go-regression.c |   19 +++++++++++++------
 2 files changed, 17 insertions(+), 7 deletions(-)
---
diff --git a/ChangeLog b/ChangeLog
index 5f813ad..811b28b 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,6 +1,9 @@
 2012-10-28  Morten Welinder  <terra gnome org>
 
-	* goffice/app/go-conf-gsettings.c (go_conf_free_node): plug leak.
+	* goffice/math/go-regression.c (go_regression_stat_destroy): Plug
+	leak.
+
+	* goffice/app/go-conf-gsettings.c (go_conf_free_node): Plug leak.
 	(go_conf_get_node): Plug leak.
 
 	* goffice/graph/gog-theme.c (gog_theme_finalize): Get rid of ->dcm
diff --git a/goffice/math/go-regression.c b/goffice/math/go-regression.c
index bffee08..e6b3a3c 100644
--- a/goffice/math/go-regression.c
+++ b/goffice/math/go-regression.c
@@ -1570,12 +1570,19 @@ SUFFIX(go_regression_stat_new) (void)
 void
 SUFFIX(go_regression_stat_destroy) (SUFFIX(go_regression_stat_t) *stat_)
 {
-	if (stat_ && stat_->ref_count-- > 1) {
-		g_free(stat_->se);
-		g_free(stat_->t);
-		g_free(stat_->xbar);
-		g_free (stat_);
-	}
+	if (!stat_)
+		return;
+
+	g_return_if_fail (stat_->ref_count > 0);
+
+	stat_->ref_count--;
+	if (stat_->ref_count > 0)
+		return;
+
+	g_free (stat_->se);
+	g_free (stat_->t);
+	g_free (stat_->xbar);
+	g_free (stat_);
 }
 
 /* ------------------------------------------------------------------------- */