Fix for bulletin preview (diff view) to make crosslistings appear correctly.

application/library/View/Helper/BulletinEntryDiff.php

@@ -30,7 +30,7 @@ class Application_View_Helper_BulletinEntryDiff
                 if($crosslisting->type == 'home listing') {
                     continue;
                 }
-                if($crosslisting->subject == $course->subject) {
+                if($crosslisting->subject == $currentCourse->subject) {
                     $currentCourseId .= '/' . $crosslisting->courseNumber . $crosslisting->courseLetter;
                 }
             }
@@ -44,7 +44,7 @@ class Application_View_Helper_BulletinEntryDiff
                 if($crosslisting->type == 'home listing') {
                     continue;
                 }
-                if($crosslisting->subject == $course->subject) {
+                if($crosslisting->subject == $proposedCourse->subject) {
                     $proposedCourseId .= '/' . $crosslisting->courseNumber . $crosslisting->courseLetter;
                 }
             }
@@ -59,7 +59,7 @@ class Application_View_Helper_BulletinEntryDiff
                 if ($crosslisting->type == 'home listing') {
                     continue;
                 }
-                if($crosslisting->subject == $course->subject) {
+                if($crosslisting->subject == $currentCourse->subject) {
                     $currentCorrespondence .= '/' . $crosslisting->courseNumber . $crosslisting->courseLetter . 'x';
                 }
             }
@@ -71,7 +71,7 @@ class Application_View_Helper_BulletinEntryDiff
                 if ($crosslisting->type == 'home listing') {
                     continue;
                 }
-                if($crosslisting->subject == $course->subject) {
+                if($crosslisting->subject == $proposedCourse->subject) {
                     $proposedCorrespondence .= '/' . $crosslisting->courseNumber . $crosslisting->courseLetter . 'x';
                 }
             }