Merge branch '4.1' into 4.2

* 4.1:
  fix cs
  [Validator] Allow `ConstraintViolation::__toString()` to expose codes that are not null or emtpy strings
  fix type for $value in DocBlock
  [WebProfilerBundle] Fix title case
  Fix wrapped loop of event listener
  [DI] fix edge case in InlineServiceDefinitionsPass
  undeprecate the single-colon notation for controllers
  Update HttpKernel.php

Author: nicolas-grekas

Compiler/InlineServiceDefinitionsPass.php

@@ -164,6 +164,10 @@ private function isInlineableDefinition($id, Definition $definition)
             return false;
         }
 
+        if (!$this->graph->hasNode($id)) {
+            return true;
+        }
+
         if (!$definition->isShared()) {
             foreach ($this->graph->getNode($id)->getInEdges() as $edge) {
                 $srcId = $edge->getSourceNode()->getId();
@@ -180,10 +184,6 @@ private function isInlineableDefinition($id, Definition $definition)
             return false;
         }
 
-        if (!$this->graph->hasNode($id)) {
-            return true;
-        }
-
         if ($this->currentId == $id) {
             return false;
         }