Allow whitespace after \end in macro definitions

Fixes #1090

core/modules/parsers/wikiparser/rules/macrodef.js

@@ -58,7 +58,7 @@ exports.parse = function() {
 	var reEnd;
 	if(this.match[3]) {
 		// If so, the end of the body is marked with \end
-		reEnd = /(\r?\n\\end(?:$|\r?\n))/mg;
+		reEnd = /(\r?\n\\end[^\S\n\r]*(?:$|\r?\n))/mg;
 	} else {
 		// Otherwise, the end of the definition is marked by the end of the line
 		reEnd = /(\r?\n)/mg;