make the exports tag work correctly when combined with the enum tag (#970)

lib/jsdoc/tag/dictionary/definitions.js

@@ -415,7 +415,7 @@ var baseTags = exports.baseTags = {
     enum: {
         canHaveType: true,
         onTagged: function(doclet, tag) {
-            doclet.kind = 'member';
+            doclet.kind = doclet.kind || 'member';
             doclet.isEnum = true;
             setDocletTypeToValueType(doclet, tag);
         }

test/fixtures/enumtag3.js

@@ -0,0 +1,11 @@
+define(function () {
+    /**
+     * @exports mymodule
+     * @enum {string}
+      */
+    var exports = {
+        A: 'abc'
+    };
+
+    return exports;
+});

test/specs/tags/enumtag.js

@@ -59,4 +59,13 @@ describe('@enum tag', function() {
             expect(pentaState.properties.length).toBe(5);
         });
     });
+
+    describe('combined with @exports tag', function() {
+        var docSet3 = jasmine.getDocSetFromFile('test/fixtures/enumtag3.js');
+        var mymodule = docSet3.getByLongname('module:mymodule')[0];
+
+        it('When a symbol has both an @exports tag and an @enum tag, its kind is set to `module`', function() {
+            expect(mymodule.kind).toBe('module');
+        });
+    });
 });