pool: do not use defines, just inline strings.

pool.c

@@ -36,12 +36,15 @@
 #include <string.h>
 
 char* get_pool_name(struct pool *pool) {
-    if (opt_incognito) return POOL_NAME_INCOGNITO;
+    if (opt_incognito) return "<pool>";
+
     if (strcmp(pool->poolname, "") == 0) return pool->sockaddr_url;
+
     return pool->poolname;
 }
 
 char* get_pool_user(struct pool *pool) {
-    if (opt_incognito) return POOL_USER_INCOGNITO;
+    if (opt_incognito) return "<user>";
+
     return pool->rpc_user;
 }

pool.h

@@ -3,9 +3,6 @@
 
 #include "miner.h"
 
-#define POOL_NAME_INCOGNITO "<incognito>"
-#define POOL_USER_INCOGNITO "<incognito>"
-
 extern char* get_pool_name(struct pool *pool);
 extern char* get_pool_user(struct pool *pool);