Add a missing break; to restore old functionality and not turn off the screen after 30secs regardless of system preference.

Change-Id: I6d160a1851e1f73bac3775d24cf70d46da59aa47
diff --git a/services/java/com/android/server/PowerManagerService.java b/services/java/com/android/server/PowerManagerService.java
index ad910c4..2fb481c 100644
--- a/services/java/com/android/server/PowerManagerService.java
+++ b/services/java/com/android/server/PowerManagerService.java
@@ -1052,6 +1052,7 @@
                         case SCREEN_DIM:
                             if (mDimDelay >= 0) {
                                 when = now + mDimDelay;
+                                break;
                             } else {
                                 Slog.w(TAG, "mDimDelay=" + mDimDelay + " while trying to dim");
                             }
@@ -1060,6 +1061,9 @@
                                 when = now + mScreenOffDelay;
                             }
                             break;
+                        default:
+                            when = now;
+                            break;
                     }
                 } else {
                     override: {