Avoid crashing when executor is invalidated before it finishes loading RA Bundle

Reviewed By: alexeylang

Differential Revision: D3150719

fb-gh-sync-id: 46e516757e110e985980056f2a8b6eaa22e522b0
fbshipit-source-id: 46e516757e110e985980056f2a8b6eaa22e522b0

React/Executors/RCTJSCExecutor.m

@@ -380,11 +380,6 @@ static void RCTInstallJSCProfiler(RCTBridge *bridge, JSContextRef context)
 
   _valid = NO;
 
-  if (_jsModules) {
-    CFRelease(_jsModules);
-    fclose(_bundle);
-  }
-
 #if RCT_DEV
   [[NSNotificationCenter defaultCenter] removeObserver:self];
 #endif
@@ -399,6 +394,11 @@ static void RCTInstallJSCProfiler(RCTBridge *bridge, JSContextRef context)
                  withObject:nil
               waitUntilDone:NO];
   _context = nil;
+
+  if (_jsModules) {
+    CFRelease(_jsModules);
+    fclose(_bundle);
+  }
 }
 
 - (void)flushedQueue:(RCTJavaScriptCallback)onComplete