[TD-13761]<fix>: redefine dir api.

source/os/src/osSocket.c

@@ -809,7 +809,7 @@ int32_t taosGetFqdn(char *fqdn) {
   char hostname[1024];
   hostname[1023] = '\0';
   if (gethostname(hostname, 1023) == -1) {
-    // printf("failed to get hostname, reason:%s", strerror(errno));
+    printf("failed to get hostname, reason:%s", strerror(errno));
     return -1;
   }
 
@@ -826,7 +826,7 @@ int32_t taosGetFqdn(char *fqdn) {
 #endif  // __APPLE__
   int32_t ret = getaddrinfo(hostname, NULL, &hints, &result);
   if (!result) {
-    // printf("failed to get fqdn, code:%d, reason:%s", ret, gai_strerror(ret));
+    printf("failed to get fqdn, code:%d, reason:%s", ret, gai_strerror(ret));
     return -1;
   }