Merge remote-tracking branch 'origin/QA_4_3' into QA_4_3

ChangeLog

@@ -4,6 +4,7 @@ phpMyAdmin - ChangeLog
 4.3.9.0 (not yet released)
 - bug #4728 Incorrect headings in routine editor
 - bug #4730 Notice while browsing tables when phpmyadmin pma database exists, but not all the tables
+- bug #4729 Display original field when using "Relational display column" option and display column is empty
 
 4.3.8.0 (2015-01-24)
 - bug       Undefined constant PMA_DRIZZLE

libraries/DisplayResults.class.php

@@ -5733,7 +5733,9 @@ class PMA_DisplayResults
                     );
                 } else {
 
-                    if ($relational_display == self::RELATIONAL_DISPLAY_COLUMN) {
+                    if ($relational_display == self::RELATIONAL_DISPLAY_COLUMN
+                       && ! empty($map[$meta->name][2])
+                    ) {
                         // user chose "relational display field" in the
                         // display options, so show display field in the cell
                         $result .= $default_function($dispval);