Move net_init() and net_cleanup() upwards

These two functions are global, define them at the top of the
implementation file. This is consistent with the header file.

app/src/util/net.c

@@ -19,6 +19,26 @@
   typedef struct in_addr IN_ADDR;
 #endif
 
+bool
+net_init(void) {
+#ifdef __WINDOWS__
+    WSADATA wsa;
+    int res = WSAStartup(MAKEWORD(2, 2), &wsa) < 0;
+    if (res < 0) {
+        LOGC("WSAStartup failed with error %d", res);
+        return false;
+    }
+#endif
+    return true;
+}
+
+void
+net_cleanup(void) {
+#ifdef __WINDOWS__
+    WSACleanup();
+#endif
+}
+
 static void
 net_perror(const char *s) {
 #ifdef _WIN32
@@ -133,26 +153,6 @@ net_shutdown(socket_t socket, int how) {
     return !shutdown(socket, how);
 }
 
-bool
-net_init(void) {
-#ifdef __WINDOWS__
-    WSADATA wsa;
-    int res = WSAStartup(MAKEWORD(2, 2), &wsa) < 0;
-    if (res < 0) {
-        LOGC("WSAStartup failed with error %d", res);
-        return false;
-    }
-#endif
-    return true;
-}
-
-void
-net_cleanup(void) {
-#ifdef __WINDOWS__
-    WSACleanup();
-#endif
-}
-
 bool
 net_close(socket_t socket) {
 #ifdef __WINDOWS__