logging.c: Fix whitespace typo

Change-Id: I943763e175dca6f3078923a494b052319b78574d
diff --git a/src/logging.c b/src/logging.c
index 381d303..edb2b56 100644
--- a/src/logging.c
+++ b/src/logging.c
@@ -759,7 +759,7 @@
 	if (!target)
 		return NULL;
 
-	target->categories = talloc_zero_array(target, 
+	target->categories = talloc_zero_array(target,
 						struct log_category,
 						osmo_log_info->num_cat);
 	if (!target->categories) {