From 68adeab76897661b454e0104061d9a9b56750ef1 Mon Sep 17 00:00:00 2001
From: Mattt Thompson <m@mattt.me>
Date: Tue, 25 Sep 2012 07:15:02 -0700
Subject: [PATCH] Use MAX to constrain _activityCount to non-negative numbers

---
 AFNetworking/AFNetworkActivityIndicatorManager.m | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/AFNetworking/AFNetworkActivityIndicatorManager.m b/AFNetworking/AFNetworkActivityIndicatorManager.m
index ec3eabc..32553fc 100644
--- a/AFNetworking/AFNetworkActivityIndicatorManager.m
+++ b/AFNetworking/AFNetworkActivityIndicatorManager.m
@@ -118,12 +118,9 @@ static NSTimeInterval const kAFNetworkActivityIndicatorInvisibilityDelay = 0.17;
 }
 
 - (void)decrementActivityCount {
-    if (_activityCount == 0) {
-        return;
-    }
     [self willChangeValueForKey:@"activityCount"];
 	@synchronized(self) {
-		_activityCount--;
+		_activityCount = MAX(_activityCount - 1, 0);
 	}
     [self didChangeValueForKey:@"activityCount"];
     [self updateNetworkActivityIndicatorVisibilityDelayed];