[metacity] stack-tracker: don't log warnings on race conditions

[Alberts Muktupāvels <muktupavels src gnome org>]

commit 10471f06b658c82971490123d93979e7017f6139
Author: Alberts Muktupāvels <alberts muktupavels gmail com>
Date:   Sat Jul 11 21:25:04 2020 +0300

    stack-tracker: don't log warnings on race conditions
    
    Based on mutter commit:
    https://gitlab.gnome.org/GNOME/mutter/-/commit/53f61f3778a41bb2e316

 src/core/stack-tracker.c | 30 ++++++++++++++++++------------
 1 file changed, 18 insertions(+), 12 deletions(-)
---
diff --git a/src/core/stack-tracker.c b/src/core/stack-tracker.c
index 8265ce2c..1c8c810b 100644
--- a/src/core/stack-tracker.c
+++ b/src/core/stack-tracker.c
@@ -317,8 +317,9 @@ meta_stack_op_apply (MetaStackOp *op,
 
         if (old_pos >= 0)
           {
-            g_warning ("STACK_OP_ADD: window %#lx already in stack",
-                       op->add.window);
+            meta_topic (META_DEBUG_STACK,
+                        "STACK_OP_ADD: window %#lx already in stack",
+                        op->add.window);
             return FALSE;
           }
 
@@ -337,8 +338,9 @@ meta_stack_op_apply (MetaStackOp *op,
 
         if (old_pos < 0)
           {
-            g_warning ("STACK_OP_REMOVE: window %#lx not in stack",
-                       op->remove.window);
+            meta_topic (META_DEBUG_STACK,
+                        "STACK_OP_REMOVE: window %#lx not in stack",
+                        op->remove.window);
             return FALSE;
           }
 
@@ -352,8 +354,9 @@ meta_stack_op_apply (MetaStackOp *op,
         int above_pos;
         if (old_pos < 0)
           {
-            g_warning ("STACK_OP_RAISE_ABOVE: window %#lx not in stack",
-                       op->raise_above.window);
+            meta_topic (META_DEBUG_STACK,
+                        "STACK_OP_RAISE_ABOVE: window %#lx not in stack",
+                        op->raise_above.window);
             return FALSE;
           }
 
@@ -362,8 +365,9 @@ meta_stack_op_apply (MetaStackOp *op,
             above_pos = find_window (stack, op->raise_above.sibling);
             if (above_pos < 0)
               {
-                g_warning ("STACK_OP_RAISE_ABOVE: sibling window %#lx not in stack",
-                           op->raise_above.sibling);
+                meta_topic (META_DEBUG_STACK,
+                            "STACK_OP_RAISE_ABOVE: sibling window %#lx not in stack",
+                            op->raise_above.sibling);
                 return FALSE;
               }
           }
@@ -382,8 +386,9 @@ meta_stack_op_apply (MetaStackOp *op,
         int above_pos;
         if (old_pos < 0)
           {
-            g_warning ("STACK_OP_LOWER_BELOW: window %#lx not in stack",
-                       op->lower_below.window);
+            meta_topic (META_DEBUG_STACK,
+                        "STACK_OP_LOWER_BELOW: window %#lx not in stack",
+                        op->lower_below.window);
             return FALSE;
           }
 
@@ -392,8 +397,9 @@ meta_stack_op_apply (MetaStackOp *op,
             int below_pos = find_window (stack, op->lower_below.sibling);
             if (below_pos < 0)
               {
-                g_warning ("STACK_OP_LOWER_BELOW: sibling window %#lx not in stack",
-                           op->lower_below.sibling);
+                meta_topic (META_DEBUG_STACK,
+                            "STACK_OP_LOWER_BELOW: sibling window %#lx not in stack",
+                            op->lower_below.sibling);
                 return FALSE;
               }