fix for drawinfo when not using element array buffers
fix for drawinfo when not using element array buffers

TheKK/WebGL-Inspector,benvanik/WebGL-Inspector,mcanthony/WebGL-Inspector,mcanthony/WebGL-Inspector,TheKK/WebGL-Inspector,benvanik/WebGL-Inspector,mcanthony/WebGL-Inspector,TheKK/WebGL-Inspector,cedricpinson/WebGL-Inspector,greggman/WebGL-Inspector,greggman/WebGL-Inspector,greggman/WebGL-Inspector,cedricpinson/WebGL-Inspector,benvanik/WebGL-Inspector,cedricpinson/WebGL-Inspector