Multiple issues after PR 10435 (Fatal on Drupal /user; fatal on profile view, etc.)

To reproduce (on dmaster.drupal.civicrm.org or your local dev master):

1. Sign into drupal (as user 1 or other user, e.g., "demo" on dmaster)
2. Observe successful login (probably navigates you to CiviCRM or to site homepage)
3. View your account by navigating to /user or /user/%uid
4. Observe CiviCRM fatal error.

backTrace

#0 /var/www/d7cividev/sites/all/modules/civicrm/CRM/Core/Error.php(374): CRM_Core_Error::backtrace()
#1 /var/www/d7cividev/sites/all/modules/civicrm/CRM/Core/DAO.php(1094): CRM_Core_Error::fatal()
#2 /var/www/d7cividev/sites/all/modules/civicrm/CRM/Activity/BAO/Activity.php(2344): CRM_Core_DAO::getFieldValue("CRM_Activity_DAO_Activity", 0, "original_id")
#3 /var/www/d7cividev/sites/all/modules/civicrm/CRM/Profile/Page/Dynamic.php(155): CRM_Activity_BAO_Activity::getLatestActivityId(0)
#4 /var/www/d7cividev/sites/all/modules/civicrm/drupal/civicrm_user.inc(237): CRM_Profile_Page_Dynamic->__construct(202, 1, NULL, TRUE)
#5 [internal function](): civicrm_user_view(Object(stdClass), "full", "en")
#6 /var/www/d7cividev/includes/module.inc(957): call_user_func_array("civicrm_user_view", (Array:3))
#7 /var/www/d7cividev/modules/user/user.module(2705): module_invoke_all("user_view", Object(stdClass), "full", "en")
#8 /var/www/d7cividev/modules/user/user.module(2657): user_build_content(Object(stdClass), "full", "en")
#9 /var/www/d7cividev/modules/user/user.module(2618): user_view(Object(stdClass))
#10 [internal function](): user_view_page(Object(stdClass))
#11 /var/www/d7cividev/includes/menu.inc(527): call_user_func_array("user_view_page", (Array:1))
#12 /var/www/d7cividev/index.php(21): menu_execute_active_handler()
#13 {main}

Sorry, due to an error, we are unable to fulfill your request at the moment. You may want to contact your administrator or service provider with more details about what action you were performing when this occurred.

A fatal error with similar backtrace is also presented when visiting profile pages, e.g. /civicrm/profile/view?reset=1&id=1&gid=1

backTrace 

#0 /var/www/d7cividev/sites/all/modules/civicrm/CRM/Core/Error.php(374): CRM_Core_Error::backtrace() #1 /var/www/d7cividev/sites/all/modules/civicrm/CRM/Core/DAO.php(1094): CRM_Core_Error::fatal() #2 /var/www/d7cividev/sites/all/modules/civicrm/CRM/Activity/BAO/Activity.php(2344): CRM_Core_DAO::getFieldValue("CRM_Activity_DAO_Activity", 0, "original_id") #3 /var/www/d7cividev/sites/all/modules/civicrm/CRM/Profile/Page/Dynamic.php(156): CRM_Activity_BAO_Activity::getLatestActivityId(0) #4 /var/www/d7cividev/sites/all/modules/civicrm/drupal/civicrm_user.inc(237): CRM_Profile_Page_Dynamic->__construct(202, 1, NULL, TRUE) #5 [internal function](): civicrm_user_view(Object(stdClass), "full", "en") #6 /var/www/d7cividev/includes/module.inc(957): call_user_func_array("civicrm_user_view", (Array:3)) #7 /var/www/d7cividev/modules/user/user.module(2705): module_invoke_all("user_view", Object(stdClass), "full", "en") #8 /var/www/d7cividev/modules/user/user.module(2657): user_build_content(Object(stdClass), "full", "en") #9 /var/www/d7cividev/modules/user/user.module(2618): user_view(Object(stdClass)) #10 [internal function](): user_view_page(Object(stdClass)) #11 /var/www/d7cividev/includes/menu.inc(527): call_user_func_array("user_view_page", (Array:1)) #12 /var/www/d7cividev/modules/user/user.pages.inc(596): menu_execute_active_handler(NULL, FALSE) #13 [internal function]() user_page() #14 /var/www/d7cividev/includes/menu.inc(527): call_user_func_array("user_page", (Array:0)) #15 /var/www/d7cividev/index.php(21): menu_execute_active_handler() #16 {main}

Sorry, due to an error, we are unable to fulfill your request at the moment. You may want to contact your administrator or service provider with more details about what action you were performing when this occurred.