adbd: don't spin if file sync read fails.

Bug: http://b/64508974
Bug: 64709603 (presubmit balking at the line above)
Test: mma
Change-Id: Ifba6a9dea3138b6d2a62c91cc0532f63986c048a
(cherry picked from commit 1d6c01b53d4b40476225f7e074cbd7c4d50dda04)
diff --git a/adb/file_sync_service.cpp b/adb/file_sync_service.cpp
index 2acf661..3448ee0 100644
--- a/adb/file_sync_service.cpp
+++ b/adb/file_sync_service.cpp
@@ -283,25 +283,25 @@
     // reading and throwing away ID_DATA packets until the other side notices
     // that we've reported an error.
     while (true) {
-        if (!ReadFdExactly(s, &msg.data, sizeof(msg.data))) goto fail;
+        if (!ReadFdExactly(s, &msg.data, sizeof(msg.data))) break;
 
         if (msg.data.id == ID_DONE) {
-            goto abort;
+            break;
         } else if (msg.data.id != ID_DATA) {
             char id[5];
             memcpy(id, &msg.data.id, sizeof(msg.data.id));
             id[4] = '\0';
             D("handle_send_fail received unexpected id '%s' during failure", id);
-            goto abort;
+            break;
         }
 
         if (msg.data.size > buffer.size()) {
             D("handle_send_fail received oversized packet of length '%u' during failure",
               msg.data.size);
-            goto abort;
+            break;
         }
 
-        if (!ReadFdExactly(s, &buffer[0], msg.data.size)) goto abort;
+        if (!ReadFdExactly(s, &buffer[0], msg.data.size)) break;
     }
 
 abort: