Add more error checking for ndc

In NativeDaemonConnector.doCommand() calls, there was inconsistent error
checking. This change adds error checking for every call and makes it so
that any call to .doCommand() that gets an error code won't cause the
code to hang forever.

Change-Id: I4584953a759a48ad16adfe8ee9e564b5f5796680
diff --git a/services/java/com/android/server/NativeDaemonConnector.java b/services/java/com/android/server/NativeDaemonConnector.java
index 08d7ce6..c452590 100644
--- a/services/java/com/android/server/NativeDaemonConnector.java
+++ b/services/java/com/android/server/NativeDaemonConnector.java
@@ -128,12 +128,11 @@
                                     Slog.e(TAG, String.format(
                                             "Error handling '%s'", event), ex);
                                 }
-                            } else {
-                                try {
-                                    mResponseQueue.put(event);
-                                } catch (InterruptedException ex) {
-                                    Slog.e(TAG, "Failed to put response onto queue", ex);
-                                }
+                            }
+                            try {
+                                mResponseQueue.put(event);
+                            } catch (InterruptedException ex) {
+                                Slog.e(TAG, "Failed to put response onto queue", ex);
                             }
                         } catch (NumberFormatException nfe) {
                             Slog.w(TAG, String.format("Bad msg (%s)", event));