[PATCH] shell: Avoid modulo by zero error in positioning algorithm

[Rob Bradford]

From: Rob Bradford <rob at linux.intel.com>

As spotted by Philipp Brüschweiler <blei42 at gmail.com>
---
 src/shell.c | 12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

diff --git a/src/shell.c b/src/shell.c
index 9d969ff..4633049 100644
--- a/src/shell.c
+++ b/src/shell.c
@@ -2636,15 +2636,15 @@ weston_surface_set_initial_position (struct weston_surface *surface,
 	range_y = (target_output->current->height - panel_height) -
 		  surface->geometry.height;
 
-	if (range_x < 0)
-		dx = 0;
-	else
+	if (range_x > 0)
 		dx = random() % range_x;
-
-	if (range_y < 0)
-		dy = panel_height;
 	else
+		dx = 0;
+
+	if (range_y > 0)
 		dy = panel_height + random() % range_y;
+	else
+		dy = panel_height;
 
 	x = target_output->x + dx;
 	y = target_output->y + dy;
-- 
1.7.11.2