WebGLPrograms: Removed parameterNames from programCode.

src/renderers/webgl/WebGLPrograms.js

@@ -215,9 +215,7 @@ THREE.WebGLPrograms = function ( renderer, capabilities ) {
 
 		for ( var i = 0; i < parameterNames.length; i ++ ) {
 
-			var parameterName = parameterNames[ i ];
-			chunks.push( parameterName );
-			chunks.push( parameters[ parameterName ] );
+			chunks.push( parameters[ parameterNames[ i ] ] );
 
 		}