[Openwebwork-cvs] pg: Added a check to handle the case when the $errors flag was not

[Mike G. v. a. <act...@de...>]

Log Message:
-----------
Added a check to handle  the  case when the $errors flag was not defined.

Modified Files:
--------------
    pg/macros:
        PGanswermacros.pl

Revision Data
-------------
Index: PGanswermacros.pl
===================================================================
RCS file: /webwork/cvs/system/pg/macros/PGanswermacros.pl,v
retrieving revision 1.26
retrieving revision 1.27
diff -Lmacros/PGanswermacros.pl -Lmacros/PGanswermacros.pl -u -r1.26 -r1.27
--- macros/PGanswermacros.pl
+++ macros/PGanswermacros.pl
@@ -3453,7 +3453,7 @@
 		push(@differences, $diff);
 		push(@instructorVals,$instructorVal);
 	}
-	if ($errors eq '' or $options{error_msg_flag} ) {
+	if (( not defined($errors) )  or $errors eq '' or $options{error_msg_flag} ) {
 	    $rh_ans ->{$options{stdout}} = \@differences;
 		$rh_ans ->{ra_student_values} = \@student_values;
 		$rh_ans ->{ra_adjusted_student_values} = \@adjusted_student_values;