Fixes for -Wmissing-declarations and -Wwrite-strings warnings.

programs/winetest/send.c

diff --git a/programs/winetest/send.c b/programs/winetest/send.c
index 8ec105a..2e6e11c 100644
--- a/programs/winetest/send.c
+++ b/programs/winetest/send.c
@@ -24,7 +24,7 @@
 
 #include "winetest.h"
 
-SOCKET
+static SOCKET
 open_http (const char *server)
 {
     WSADATA wsad;
@@ -61,7 +61,7 @@
     return INVALID_SOCKET;
 }
 
-int
+static int
 close_http (SOCKET s)
 {
     int ret;
@@ -70,7 +70,7 @@
     return (WSACleanup () || ret);
 }
 
-int
+static int
 send_buf (SOCKET s, const char *buf, size_t length)
 {
     int sent;
@@ -84,7 +84,7 @@
     return 0;
 }
 
-int
+static int
 send_str (SOCKET s, ...)
 {
     va_list ap;