[WWcvs] webwork2: Intialize tth preamble variable to avoid undefined errors when

[Gavin L. v. a. <we...@ma...>]

Log Message:
-----------
Intialize tth preamble variable to avoid undefined errors when running
in formattedText mode.

Modified Files:
--------------
    webwork2/lib/WeBWorK/ContentGenerator:
        Problem.pm

Revision Data
-------------
Index: Problem.pm
===================================================================
RCS file: /webwork/cvs/system/webwork2/lib/WeBWorK/ContentGenerator/Problem.pm,v
retrieving revision 1.182
retrieving revision 1.183
diff -Llib/WeBWorK/ContentGenerator/Problem.pm -Llib/WeBWorK/ContentGenerator/Problem.pm -u -r1.182 -r1.183
--- lib/WeBWorK/ContentGenerator/Problem.pm
+++ lib/WeBWorK/ContentGenerator/Problem.pm
@@ -328,7 +328,7 @@
 	} elsif ($displayMode eq "formattedText") {
 		
 		# read the TTH preamble, or use the cached copy passed in from the caller
-		my $tthPreamble;
+		my $tthPreamble='';
 		if (defined $$tthPreambleCache) {
 			$tthPreamble = $$tthPreambleCache;
 		} else {