[#525] fixed some linting issues
[#525] fixed some linting issues

MarkoIvanetic/melonJS,gopalindians/melonJS,melonjs/melonJS,rlugojr/melonJS,srbala/melonJS,srbala/melonJS,gopalindians/melonJS,melonjs/melonJS,MarkoIvanetic/melonJS,rlugojr/melonJS,rlugojr/melonJS,TukekeSoft/melonJS,gopalindians/melonJS,srbala/melonJS,TukekeSoft/melonJS,TukekeSoft/melonJS