Bug 1082106: $dbh->bz_add_columns creates a foreign key constraint causing…

Bugzilla/DB.pm

@@ -577,8 +577,11 @@ sub bz_add_column {
     my $current_def = $self->bz_column_info($table, $name);
 
     if (!$current_def) {
+        # REFERENCES need to happen later and not be created right away
+        my $trimmed_def = dclone($new_def);
+        delete $trimmed_def->{REFERENCES};
         my @statements = $self->_bz_real_schema->get_add_column_ddl(
-            $table, $name, $new_def, 
+            $table, $name, $trimmed_def,
             defined $init_value ? $self->quote($init_value) : undef);
         print get_text('install_column_add',
                        { column => $name, table => $table }) . "\n"