Fix a monkey crash when it dismisses suggestion.

Change-Id: I300a49ed75381795b6532388f770847ed39a4c8c
Fix: 36509330
Test: make RunSettingsRoboTests

src/com/android/settings/dashboard/suggestions/SuggestionFeatureProviderImpl.java

@@ -63,7 +63,7 @@ public class SuggestionFeatureProviderImpl implements SuggestionFeatureProvider
 
     @Override
     public void dismissSuggestion(Context context, SuggestionParser parser, Tile suggestion) {
-        if (parser == null || suggestion == null) {
+        if (parser == null || suggestion == null || context == null) {
             return;
         }
         mMetricsFeatureProvider.action(