adb: use delete on objects with destructors.

asocket has a destructor now, so we have to delete it, or leak the
data pointed to by its std::string.

Bug: http://b/73257049
Test: manual testing with asan
Change-Id: Ia88199292cc74e10032a9a16226d3afc61c3e0be
diff --git a/adb/sockets.cpp b/adb/sockets.cpp
index e9c45b7..307cbfe 100644
--- a/adb/sockets.cpp
+++ b/adb/sockets.cpp
@@ -170,7 +170,7 @@
     fdevent_remove(&s->fde);
 
     remove_socket(s);
-    free(s);
+    delete s;
 
     if (exit_on_close) {
         D("local_socket_destroy: exiting");
@@ -347,10 +347,7 @@
 }
 
 asocket* create_local_socket(int fd) {
-    asocket* s = reinterpret_cast<asocket*>(calloc(1, sizeof(asocket)));
-    if (s == NULL) {
-        fatal("cannot allocate socket");
-    }
+    asocket* s = new asocket();
     s->fd = fd;
     s->enqueue = local_socket_enqueue;
     s->ready = local_socket_ready;
@@ -459,7 +456,7 @@
     D("entered remote_socket_close RS(%d) CLOSE fd=%d peer->fd=%d", s->id, s->fd,
       s->peer ? s->peer->fd : -1);
     D("RS(%d): closed", s->id);
-    free(s);
+    delete s;
 }
 
 // Create a remote socket to exchange packets with a remote service through transport
@@ -470,11 +467,7 @@
     if (id == 0) {
         fatal("invalid remote socket id (0)");
     }
-    asocket* s = reinterpret_cast<asocket*>(calloc(1, sizeof(asocket)));
-
-    if (s == NULL) {
-        fatal("cannot allocate socket");
-    }
+    asocket* s = new asocket();
     s->id = id;
     s->enqueue = remote_socket_enqueue;
     s->ready = remote_socket_ready;
@@ -811,13 +804,12 @@
         s->peer->close(s->peer);
         s->peer = 0;
     }
-    free(s);
+    delete s;
 }
 
 static asocket* create_smart_socket(void) {
     D("Creating smart socket");
-    asocket* s = reinterpret_cast<asocket*>(calloc(1, sizeof(asocket)));
-    if (s == NULL) fatal("cannot allocate socket");
+    asocket* s = new asocket();
     s->enqueue = smart_socket_enqueue;
     s->ready = smart_socket_ready;
     s->shutdown = NULL;