[metacity] place: use correct event to suppress defects

[Alberts Muktupāvels <muktupavels src gnome org>]

commit 36d3678678dda5a11521a1e0f2c3cbff898213cb
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Sun Mar 14 22:31:28 2021 +0200

    place: use correct event to suppress defects
    
    Coverity CID: #1445646

 src/core/place.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
---
diff --git a/src/core/place.c b/src/core/place.c
index f60da6b0b..70e80b7f4 100644
--- a/src/core/place.c
+++ b/src/core/place.c
@@ -724,12 +724,12 @@ find_preferred_position (MetaWindow *window,
             *new_y += work_area.y;
             break;
 
-          /* coverity[dead_error_line] */
+          /* coverity[dead_error_begin] */
           case META_PLACEMENT_MODE_SMART:
             g_assert_not_reached ();
             break;
 
-          /* coverity[dead_error_line] */
+          /* coverity[dead_error_begin] */
           case META_PLACEMENT_MODE_CASCADE:
             g_assert_not_reached ();
             break;