RN: Fix requireNativeComponent Check

Reviewed By: sahrens, TheSavior

Differential Revision: D7893594

fbshipit-source-id: 83f6995842e9480382c0b2abf6b6e72c6c107a49

Author: yungsters

Libraries/ReactNative/requireNativeComponent.js

@@ -101,7 +101,7 @@ function requireNativeComponent(
     const viewConfig = UIManager[viewName];
 
     invariant(
-      viewConfig != null && !viewConfig.NativeProps != null,
+      viewConfig != null && viewConfig.NativeProps != null,
       'Native component for "%s" does not exist',
       viewName,
     );