Fix TypeError that occurs in colorspace.js on accidentally passing an…

… 'Array' instead of 'TypedArray'

Fix TypeError that occurs in colorspace.js on accidentally passing an 'Array' instead of 'TypedArray'

Changed getRgbItem(...) to getRgbBuffer(...) since this.lookup has values in range[0, 255] whereas getRgbItem(...) expects those to be in range [0, 1]

Revert changes for IE9 compatibility

src/core/colorspace.js

@@ -538,7 +538,7 @@ var IndexedCS = (function IndexedCSClosure() {
                                               dest, destOffset) {
       var numComps = this.base.numComps;
       var start = src[srcOffset] * numComps;
-      this.base.getRgbItem(this.lookup, start, dest, destOffset);
+      this.base.getRgbBuffer(this.lookup, start, 1, dest, destOffset, 8, 0);
     },
     getRgbBuffer: function IndexedCS_getRgbBuffer(src, srcOffset, count,
                                                   dest, destOffset, bits,