Fix recovery image build.

A recent adb cleanup changed the signature of adb_main.

Change-Id: I98d084f999966f1a7aa94c63e9ed996b3375096d
diff --git a/minadbd/adb_main.cpp b/minadbd/adb_main.cpp
index 724f39c..514f196 100644
--- a/minadbd/adb_main.cpp
+++ b/minadbd/adb_main.cpp
@@ -27,7 +27,7 @@
 #include "adb_auth.h"
 #include "transport.h"
 
-int adb_main(int is_daemon, int server_port) {
+int adb_main(int is_daemon, int server_port, int /* reply_fd */) {
     adb_device_banner = "sideload";
 
     signal(SIGPIPE, SIG_IGN);