Fix #13789: Don't throw when module === null. Close jquerygh-1269.

src/exports.js

@@ -1,4 +1,4 @@
-if ( typeof module === "object" && typeof module.exports === "object" ) {
+if ( typeof module === "object" && module && typeof module.exports === "object" ) {
 	// Expose jQuery as module.exports in loaders that implement the Node
 	// module pattern (including browserify). Do not create the global, since
 	// the user will be storing it themselves locally, and globals are frowned