adb: use asocket's close function when closing.

close_all_sockets was assuming that all registered local sockets used
local_socket_close as their close function. However, this is not true
for JDWP sockets.

Bug: http://b/28347842
Change-Id: I40a1174845cd33f15f30ce70828a7081cd5a087e
(cherry picked from commit 53eb31d8)

adb/sockets.cpp

@@ -39,8 +39,6 @@
 #include "sysdeps/mutex.h"
 #include "transport.h"
 
-static void local_socket_close(asocket* s);
-
 static std::recursive_mutex& local_socket_list_lock = *new std::recursive_mutex();
 static unsigned local_socket_next_id = 1;
 
@@ -118,7 +116,7 @@ void close_all_sockets(atransport* t) {
 restart:
     for (s = local_socket_list.next; s != &local_socket_list; s = s->next) {
         if (s->transport == t || (s->peer && s->peer->transport == t)) {
-            local_socket_close(s);
+            s->close(s);
             goto restart;
         }
     }