pretty up ConfDump output for when there is no valid prefix

src/conf.c

@@ -428,9 +428,16 @@ ConfNodeDump(ConfNode *node, const char *prefix)
     level++;
     TAILQ_FOREACH(child, &node->head, next) {
         name[level] = strdup(child->name);
-        if (child->val != NULL)
-            printf("%s.%s = %s\n", prefix,
-                ConfPrintNameArray(name, level), child->val);
+        if (child->val != NULL) {
+            if (prefix == NULL) {
+                printf("%s = %s\n", ConfPrintNameArray(name, level),
+                    child->val);
+            }
+            else {
+                printf("%s.%s = %s\n", prefix,
+                    ConfPrintNameArray(name, level), child->val);
+            }
+        }
         ConfNodeDump(child, prefix);
         free(name[level]);
     }