Fixed erroneous bit operation

Took 4 minutes

src/renderers/WebGLRenderer.js

@@ -821,7 +821,7 @@ function WebGLRenderer( parameters ) {
 
 	function setupVertexAttributes( material, program, geometry ) {
 
-		if ( geometry && geometry.isInstancedBufferGeometry & ! capabilities.isWebGL2 ) {
+		if ( geometry && geometry.isInstancedBufferGeometry && ! capabilities.isWebGL2 ) {
 
 			if ( extensions.get( 'ANGLE_instanced_arrays' ) === null ) {