[clutter] flow-layout: Check for all positive values

[Emmanuele Bassi <ebassi src gnome org>]

commit ee708d1cf8f2a74f34626e2da5b7b42a4d5cb0b7
Author: Mike Ruprecht <mike ruprecht collabora co uk>
Date:   Tue May 22 14:25:19 2012 +0100

    flow-layout: Check for all positive values
    
    When creating a FlowLayout container, setting a specific size on it, and
    adding a child to it, as per the attached testcase, it crashes. The line
    on the backtrace doesn't really make sense, but from looking over it, it
    appears that it's probably because priv->line_natural is NULL. The
    attached patch makes it so in this case, priv->line_natural is
    allocated.
    
    https://bugzilla.gnome.org/show_bug.cgi?id=676068
    
    Signed-off-by: Emmanuele Bassi <ebassi linux intel com>

 clutter/clutter-flow-layout.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/clutter/clutter-flow-layout.c b/clutter/clutter-flow-layout.c
index 94df4db..97524b2 100644
--- a/clutter/clutter-flow-layout.c
+++ b/clutter/clutter-flow-layout.c
@@ -580,8 +580,8 @@ clutter_flow_layout_allocate (ClutterLayoutManager   *manager,
    * available size in case the FlowLayout wasn't given the exact
    * size it requested
    */
-  if ((priv->req_width > 0 && avail_width != priv->req_width) ||
-      (priv->req_height > 0 && avail_height != priv->req_height))
+  if ((priv->req_width >= 0 && avail_width != priv->req_width) ||
+      (priv->req_height >= 0 && avail_height != priv->req_height))
     {
       clutter_flow_layout_get_preferred_width (manager, container,
                                                avail_height,