fix crashes related to missing Rx error handler (#1561)

app/src/main/java/com/keylesspalace/tusky/components/conversation/ConversationsViewModel.kt

@@ -59,6 +59,7 @@ class ConversationsViewModel @Inject constructor(
                     }
                     .subscribeOn(Schedulers.io())
                     .doOnError { t -> Log.w("ConversationViewModel", "Failed to favourite conversation", t) }
+                    .onErrorReturnItem(0)
                     .subscribe()
                     .addTo(disposables)
         }
@@ -77,6 +78,7 @@ class ConversationsViewModel @Inject constructor(
                     }
                     .subscribeOn(Schedulers.io())
                     .doOnError { t -> Log.w("ConversationViewModel", "Failed to favourite conversation", t) }
+                    .onErrorReturnItem(0)
                     .subscribe()
                     .addTo(disposables)
         }

app/src/main/java/com/keylesspalace/tusky/components/search/SearchViewModel.kt

@@ -19,6 +19,7 @@ import com.keylesspalace.tusky.viewdata.StatusViewData
 import io.reactivex.Single
 import io.reactivex.android.schedulers.AndroidSchedulers
 import io.reactivex.disposables.CompositeDisposable
+import io.reactivex.rxkotlin.addTo
 import javax.inject.Inject
 
 class SearchViewModel @Inject constructor(
@@ -89,9 +90,14 @@ class SearchViewModel @Inject constructor(
 
     fun removeItem(status: Pair<Status, StatusViewData.Concrete>) {
         timelineCases.delete(status.first.id)
-                .subscribe()
-        if (loadedStatuses.remove(status))
-            repoResultStatus.value?.refresh?.invoke()
+                .subscribe({
+                    if (loadedStatuses.remove(status))
+                        repoResultStatus.value?.refresh?.invoke()
+                }, {
+                    err -> Log.d(TAG, "Failed to delete status", err)
+                })
+                .addTo(disposables)
+
     }
 
     fun expandedChange(status: Pair<Status, StatusViewData.Concrete>, expanded: Boolean) {

app/src/main/java/com/keylesspalace/tusky/util/ShareShortcutHelper.kt

@@ -89,6 +89,7 @@ fun updateShortcut(context: Context, account: AccountEntity) {
 
     }
             .subscribeOn(Schedulers.io())
+            .onErrorReturnItem(false)
             .subscribe()