Make hostip.c compile again

lib/hostip.c

@@ -123,7 +123,7 @@
 static struct curl_hash hostname_cache;
 static int host_cache_initialized;
 
-#ifdef CURLDEBUG
+#ifdef DEBUGBUILD
 static int ndns = 0;
 #endif
 
@@ -711,13 +711,19 @@ static void freednsentry(void *freethis)
   }
 }
 
-#ifdef CURLDEBUG
+#if 0
+
+TODO before 7.19.8: Give some use to this function or remove it.
+
+#ifdef DEBUGBUILD
 int curl_get_ndns(void)
 {
   return ndns;
 }
 #endif
 
+#endif
+
 /*
  * Curl_mk_dnscache() creates a new DNS cache and returns the handle for it.
  */