Merge pull request #121 from denivip/108-current-queue-crash

Fix dispatch_get_current_queue crash (Issue #108)

Lumberjack/DDLog.m

@@ -855,7 +855,14 @@ - (instancetype)initWithLogMsg:(NSString *)msg
 		timestamp = [[NSDate alloc] init];
 
 		machThreadID = pthread_mach_thread_np(pthread_self());
-
+
+#if __IPHONE_OS_VERSION_MIN_REQUIRED >= 60000
+        // dispatch_get_current_queue() is deprecated and most importantly it
+        // crashes sometimes and there's no other way to reliably get the name
+        // of the current queue.
+
+        queueLabel = dd_str_copy("");
+#else
 		#pragma clang diagnostic push
 		#pragma clang diagnostic ignored "-Wdeprecated-declarations"
 		// The documentation for dispatch_get_current_queue() states:
@@ -874,6 +881,7 @@ - (instancetype)initWithLogMsg:(NSString *)msg
 		#pragma clang diagnostic pop
 
 		queueLabel = dd_str_copy(dispatch_queue_get_label(currentQueue));
+#endif
 
 		threadName = [[NSThread currentThread] name];
 	}