Merge pull request #37 from bitstadium/fix/fix-deadlock-in-BITChannel

Fix the deadlock in BITChannel

Author: Benjamin Scholtysik (Reimold)

Classes/BITChannel.m

@@ -298,12 +298,14 @@ - (void)enqueueTelemetryItem:(BITTelemetryData *)item completionHandler:(nullabl
       return;
     }
 
+    // Should be outside of @synchronized block!
+    BOOL applicationIsInBackground = ([BITHockeyHelper applicationState] == BITApplicationStateBackground);
+    
     // Enqueue item.
     @synchronized(self) {
       NSDictionary *dict = [strongSelf dictionaryForTelemetryData:item];
       [strongSelf appendDictionaryToEventBuffer:dict];
       // If the app is running in the background.
-      BOOL applicationIsInBackground = ([BITHockeyHelper applicationState] == BITApplicationStateBackground);
       if (strongSelf.dataItemCount >= strongSelf.maxBatchSize || applicationIsInBackground) {
 
         // Case 2: Max batch count has been reached or the app is running in the background, so write queue to disk and delete all items.