From fbaab54b407f74fc12c39e4101b363d4689ca100 Mon Sep 17 00:00:00 2001
From: Benjamin Reed <github@raccoonfink.com>
Date: Thu, 24 Sep 2020 07:31:15 -0400
Subject: [PATCH] fix(ios): iterate listeners to avoid mutated while being
 enumerated (#3572)

---
 ios/Capacitor/Capacitor/CAPPlugin.m | 11 +++++++----
 1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/ios/Capacitor/Capacitor/CAPPlugin.m b/ios/Capacitor/Capacitor/CAPPlugin.m
index f0fe9e14e..ddfa79bf1 100644
--- a/ios/Capacitor/Capacitor/CAPPlugin.m
+++ b/ios/Capacitor/Capacitor/CAPPlugin.m
@@ -99,10 +99,13 @@ - (void)notifyListeners:(NSString *)eventName data:(NSDictionary<NSString *,id>
     }
     return;
   }
-  
-  for(CAPPluginCall *call in listenersForEvent) {
-    CAPPluginCallResult *result = [[CAPPluginCallResult alloc] init:data];
-    call.successHandler(result, call);
+
+  for (int i=0; i < listenersForEvent.count; i++) {
+    CAPPluginCall *call = listenersForEvent[i];
+    if (call != nil) {
+      CAPPluginCallResult *result = [[CAPPluginCallResult alloc] init:data];
+      call.successHandler(result, call);
+    }
   }
 }