Avoid null-pointer exception if direction is not specified

Change-Id: Idbef18368a1a7db5dd2c878a29af93d3d6a9bedf

Author: ChristophEichhorn

cf-java-logging-support-core/src/main/java/com/sap/hcp/cf/logging/common/RequestRecord.java

@@ -93,9 +93,10 @@ public RequestRecord(String layerKey) {
      */
     public RequestRecord(String layerKey, Direction direction) {
         addTag(Fields.LAYER, layerKey);
-        if (direction != null) {
-            this.direction = direction;
+        if (direction == null) {
+            direction = Direction.OUT;
         }
+        this.direction = direction;
         addTag(Fields.DIRECTION, direction.toString());
         setDefaults();
         start();