[gnumeric] Do not ungrab a not grabbed item. [#620369]

[Jean Bréfort <jbrefort src gnome org>]

commit 386a3c14d79de598bbb45d389468100eeb990367
Author: Jean Brefort <jean brefort normalesup org>
Date:   Wed Jun 2 20:07:07 2010 +0200

    Do not ungrab a not grabbed item. [#620369]

 ChangeLog      |    5 +++++
 NEWS           |    3 +++
 src/item-bar.c |    3 ++-
 3 files changed, 10 insertions(+), 1 deletions(-)
---
diff --git a/ChangeLog b/ChangeLog
index c8bb786..7c29ca1 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,8 @@
+2010-06-02  Jean Brefort  <jean brefort normalesup org>
+
+	* src/item-bar.c (item_bar_button_released): do not ungrab a not grabbed
+	item. [#620369]
+
 2010-05-31 Andreas J. Guelzow <aguelzow pyrshep ca>
 
 	* component/Gnumeric-embed.xml.in: added Wilcoxon Signed-Rank items
diff --git a/NEWS b/NEWS
index 4b1b271..3f0e387 100644
--- a/NEWS
+++ b/NEWS
@@ -4,6 +4,9 @@ Andreas:
 	* Add Wilcoxon Signed Rank Test tools for one and two populations.
 	* Fix spin button handling in various tool dialogs. [#619971] 
 
+Jean:
+	* Do not ungrab a not grabbed item. [#620369]
+
 Morten:
 	* Make sure windows for help commands show up on right screen.
 	* Fix dependency tabulation undo issue.
diff --git a/src/item-bar.c b/src/item-bar.c
index 7afd632..f115f32 100644
--- a/src/item-bar.c
+++ b/src/item-bar.c
@@ -1017,7 +1017,8 @@ static gboolean
 item_bar_button_released (GocItem *item, int button, double x, double y)
 {
 	ItemBar	*ib = ITEM_BAR (item);
-	gnm_simple_canvas_ungrab (item, 0);
+	if (item == goc_canvas_get_grabbed_item (item->canvas))
+		gnm_simple_canvas_ungrab (item, 0);
 	if (ib->colrow_being_resized >= 0) {
 		if (ib->has_resize_guides)
 			item_bar_resize_stop (ib, ib->colrow_resize_size);