Add missing includes after previous commit.

src/add-ons/kernel/file_systems/nfs4/Connection.cpp

@@ -11,6 +11,7 @@
 
 #include <arpa/inet.h>
 #include <errno.h>
+#include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 #include <unistd.h>

src/add-ons/kernel/network/dns_resolver/server/main.cpp

@@ -7,6 +7,7 @@
  */
 
 
+#include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 

src/apps/poorman/libhttpd/libhttpd.h

@@ -36,6 +36,7 @@
 #include <netinet/in.h>
 #include <arpa/inet.h>
 #include <netdb.h>
+#include <stdio.h>
 
 #if defined(AF_INET6) && defined(IN6_IS_ADDR_V4MAPPED)
 #define USE_IPV6