Fix function.apply type definition
Fix function.apply type definition

Thanks @DanielRosenwasser #fix 22600

microsoft/TypeScript,kitsonk/TypeScript,minestarks/TypeScript,basarat/TypeScript,nojvek/TypeScript,SaschaNaz/TypeScript,donaldpipowitch/TypeScript,basarat/TypeScript,kpreisser/TypeScript,Microsoft/TypeScript,microsoft/TypeScript,donaldpipowitch/TypeScript,weswigham/TypeScript,kpreisser/TypeScript,nojvek/TypeScript,minestarks/TypeScript,alexeagle/TypeScript,kpreisser/TypeScript,kitsonk/TypeScript,SaschaNaz/TypeScript,donaldpipowitch/TypeScript,basarat/TypeScript,donaldpipowitch/TypeScript,microsoft/TypeScript,kitsonk/TypeScript,alexeagle/TypeScript,weswigham/TypeScript,RyanCavanaugh/TypeScript,SaschaNaz/TypeScript,minestarks/TypeScript,Microsoft/TypeScript,RyanCavanaugh/TypeScript,nojvek/TypeScript,nojvek/TypeScript,RyanCavanaugh/TypeScript,Microsoft/TypeScript,weswigham/TypeScript,basarat/TypeScript,SaschaNaz/TypeScript,alexeagle/TypeScript