FELIX-1821: Fixed so that the system loggers survive restarts.

git-svn-id: https://svn.apache.org/repos/asf/felix/trunk@830778 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/http/base/src/main/java/org/apache/felix/http/base/internal/logger/SystemLogger.java b/http/base/src/main/java/org/apache/felix/http/base/internal/logger/SystemLogger.java
index ef9c7f2..ed05280 100644
--- a/http/base/src/main/java/org/apache/felix/http/base/internal/logger/SystemLogger.java
+++ b/http/base/src/main/java/org/apache/felix/http/base/internal/logger/SystemLogger.java
@@ -9,9 +9,7 @@
 
     public static void setLogService(LogService service)
     {
-        if (LOGGER == null) {
-            LOGGER = service;
-        }
+        LOGGER = service;
     }
 
     private static LogService getLogger()