WebGLRenderer: Clean up.

src/renderers/WebGLRenderer.js

@@ -1937,7 +1937,12 @@ THREE.WebGLRenderer = function ( parameters ) {
 
 		if ( uvScaleMap !== undefined ) {
 
-			if ( uvScaleMap instanceof THREE.WebGLRenderTarget ) uvScaleMap = uvScaleMap.texture;
+			if ( uvScaleMap instanceof THREE.WebGLRenderTarget ) {
+
+				uvScaleMap = uvScaleMap.texture;
+
+			}
+
 			var offset = uvScaleMap.offset;
 			var repeat = uvScaleMap.repeat;