Fixes typo reported by NoKarma that caused module.exports assignments…

… to not work if the the 'module' dependency was not the last dependency in the list. Nice find. Added a new unit test so this does not regress in the future.

require.js

@@ -1315,7 +1315,7 @@ var require;
                     ret = defined[name];
                 } else {
                     if (cjsModule && "exports" in cjsModule) {
-                        ret = defined[name] = depModule.exports;
+                        ret = defined[name] = cjsModule.exports;
                     } else {
                         if (name in defined && !usingExports) {
                             req.onError(new Error(name + " has already been defined"));

tests/exports/assign2.js

@@ -0,0 +1,4 @@
+require.def(["module", "exports", "require"],
+            function (module, exports, require) {
+    module.exports = "assign2";
+});

tests/exports/exports-tests.js

@@ -1,15 +1,16 @@
 require({
         baseUrl: require.isBrowser ? "./" : "./exports/"    
     },
-    ["require", "vanilla", "funcSet", "assign"],
-    function(require, vanilla, funcSet, assign) {
+    ["require", "vanilla", "funcSet", "assign", "assign2"],
+    function(require, vanilla, funcSet, assign, assign2) {
         doh.register(
             "exports", 
             [
                 function exports(t){
                     t.is("vanilla", vanilla.name);
                     t.is("funcSet", funcSet);
                     t.is("assign", assign);
+                    t.is("assign2", assign2);
                 }
             ]
         );