fix bug 794

@@ -148,14 +148,24 @@ const _editInfo = (uid, nickName, username, gender, birthday)=> {
  * @private
  */
 const _editUserContactInfo = (uid, areaCode, mobile, fullAddress, zipCode)=> {
-    return api.get('', {
+    let param = {
         method: 'web.passport.modifyUserContacts',
-        uid: uid,
-        area_code: areaCode,
-        mobile: mobile,
-        full_address: fullAddress,
-        zip_code: zipCode
-    }).then(result => result);
+        uid: uid
+    };
+
+    if (mobile) {
+        param.mobile = mobile;
+    }
+    if (zipCode) {
+        param.zip_code = zipCode;
+    }
+    if (areaCode) {
+        param.area_code = areaCode;
+    }
+    if (fullAddress) {
+        param.full_address = fullAddress;
+    }
+    return api.get('', param).then(result => result);
 };
 
 /**
@@ -170,7 +180,9 @@ const editUserInfo = (uid, info) => {
         _editUserContactInfo(uid, info.area_code, info.mobile, info.full_address, info.zip_code)
     ];
 
-    return Promise.all(getData).then(result => result);
+    return Promise.all(getData).then(result => {
+        return result;
+    });
 };
 
 /**