unix, windows: move includes for EAI constants

src/unix/getaddrinfo.c

@@ -33,6 +33,9 @@
 #include <stdlib.h>
 #include <string.h>
 
+/* EAI_* constants. */
+#include <netdb.h>
+
 
 int uv__getaddrinfo_translate_error(int sys_err) {
   switch (sys_err) {

src/uv-common.c

@@ -32,13 +32,6 @@
 # include <net/if.h> /* if_nametoindex */
 #endif
 
-/* EAI_* constants. */
-#if !defined(_WIN32)
-# include <sys/types.h>
-# include <sys/socket.h>
-# include <netdb.h>
-#endif
-
 #define XX(uc, lc) case UV_##uc: return sizeof(uv_##lc##_t);
 
 size_t uv_handle_size(uv_handle_type type) {

src/win/getaddrinfo.c

@@ -26,6 +26,9 @@
 #include "internal.h"
 #include "req-inl.h"
 
+/* EAI_* constants. */
+#include <winsock2.h>
+
 
 int uv__getaddrinfo_translate_error(int sys_err) {
   switch (sys_err) {