adb: fix a leak.

Test: none
Change-Id: I469bd93180cd2a8b6408f73e8c8f164f72b3345c
diff --git a/adb/transport.cpp b/adb/transport.cpp
index f221785..4a9d91a 100644
--- a/adb/transport.cpp
+++ b/adb/transport.cpp
@@ -227,6 +227,7 @@
             }
 #if ADB_HOST
             if (p->msg.command == 0) {
+                put_apacket(p);
                 continue;
             }
 #endif