From c2d6e6ca917c8a0e129f0eec436cf9b35b4d1051 Mon Sep 17 00:00:00 2001
From: Quang Tran <tranquangbk56@gmail.com>
Date: Wed, 9 Oct 2024 16:40:40 +0700
Subject: [PATCH] Fixed crash when it tried to remove the first element in case
 its array is empty

---
 RMQClient/RMQMultipleChannelAllocator.m | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/RMQClient/RMQMultipleChannelAllocator.m b/RMQClient/RMQMultipleChannelAllocator.m
index 8980d742..e380e994 100644
--- a/RMQClient/RMQMultipleChannelAllocator.m
+++ b/RMQClient/RMQMultipleChannelAllocator.m
@@ -105,7 +105,9 @@ - (void)releaseChannelNumber:(NSNumber *)channelNumber {
 
 - (NSArray *)allocatedUserChannels {
     NSMutableArray *userChannels = [self.channels.allValues mutableCopy];
-    [userChannels removeObjectAtIndex:0];
+    if ([userChannels count] > 0) {
+        [userChannels removeObjectAtIndex:0];
+    }
     return [userChannels sortedArrayUsingComparator:^NSComparisonResult(id<RMQChannel> ch1, id<RMQChannel> ch2) {
         return ch1.channelNumber.integerValue > ch2.channelNumber.integerValue;
     }];