Mark incomplete service definitions as abstract

Author: stof

Resources/config/monolog.xml

@@ -20,8 +20,8 @@
             <argument /><!-- Channel -->
         </service>
 
-        <service id="monolog.activation_strategy.not_found" class="Symfony\Bridge\Monolog\Handler\FingersCrossed\NotFoundActivationStrategy"/>
-        <service id="monolog.handler.fingers_crossed.error_level_activation_strategy" class="Monolog\Handler\FingersCrossed\ErrorLevelActivationStrategy"/>
+        <service id="monolog.activation_strategy.not_found" class="Symfony\Bridge\Monolog\Handler\FingersCrossed\NotFoundActivationStrategy" abstract="true" />
+        <service id="monolog.handler.fingers_crossed.error_level_activation_strategy" class="Monolog\Handler\FingersCrossed\ErrorLevelActivationStrategy" abstract="true" />
 
         <!-- Formatters -->
         <service id="monolog.formatter.chrome_php" class="Monolog\Formatter\ChromePHPFormatter" public="false" />