RCTDisplayLink.m > Use autoreleasepool from CFRunLoopPerformBlock

Summary:
Changelog:
[iOS][Fixed] This is a quick speculative fix since we know `CFRunLoopPerformBlock` does not push/pop an autorelease pool.

Reviewed By: appden

Differential Revision: D32657298

fbshipit-source-id: 4641ad89baf7889ba4bf80e6e64e26de02818cb8

Author: christophpurrer

React/Base/RCTDisplayLink.m

@@ -62,7 +62,9 @@ - (void)registerModuleForFrameUpdates:(id<RCTBridgeModule>)module withModuleData
       [weakSelf updateJSDisplayLinkState];
     } else {
       CFRunLoopPerformBlock(cfRunLoop, kCFRunLoopDefaultMode, ^{
-        [weakSelf updateJSDisplayLinkState];
+        @autoreleasepool {
+          [weakSelf updateJSDisplayLinkState];
+        }
       });
       CFRunLoopWakeUp(cfRunLoop);
     }
@@ -73,7 +75,9 @@ - (void)registerModuleForFrameUpdates:(id<RCTBridgeModule>)module withModuleData
   // start receiving updates anyway.
   if (![observer isPaused] && _runLoop) {
     CFRunLoopPerformBlock([_runLoop getCFRunLoop], kCFRunLoopDefaultMode, ^{
-      [self updateJSDisplayLinkState];
+      @autoreleasepool {
+        [self updateJSDisplayLinkState];
+      }
     });
   }
 }