(#781) Filter out InterruptedExceptions coming into RxJava onError handler inside RuntimeExceptions

Kuroba/app/src/main/java/com/github/adamantcheese/chan/Chan.java

@@ -140,6 +140,11 @@ public void onCreate() {
                 // fine, some blocking code was interrupted by a dispose call
                 return;
             }
+            if (e instanceof RuntimeException && e.getCause() instanceof InterruptedException) {
+                // fine, DB synchronous call (via runTask) was interrupted when a reactive stream
+                // was disposed of.
+                return;
+            }
             if (e instanceof FileCacheException.CancellationException
                     || e instanceof FileCacheException.FileNotFoundOnTheServerException) {
                 // fine, sometimes they get through all the checks but it doesn't really matter

Kuroba/app/src/main/java/com/github/adamantcheese/chan/core/database/DatabaseManager.java

@@ -207,7 +207,12 @@ public <T> void runTaskAsync(final Callable<T> taskCallable, final TaskResult<T>
     public <T> T runTask(final Callable<T> taskCallable) {
         try {
             return executeTask(taskCallable, null).get();
-        } catch (InterruptedException | ExecutionException e) {
+        } catch (InterruptedException e) {
+            // Since we don't rethrow InterruptedException we need to at least restore the
+            // "interrupted" flag.
+            Thread.currentThread().interrupt();
+            throw new RuntimeException(e);
+        } catch (ExecutionException e) {
             throw new RuntimeException(e);
         }
     }