[6777] add back variable declaration

[Gavin D. Smith]

Revision: 6777
          http://svn.sv.gnu.org/viewvc/?view=rev&root=texinfo&revision=6777
Author:   gavin
Date:     2015-11-10 16:34:37 +0000 (Tue, 10 Nov 2015)
Log Message:
-----------
add back variable declaration

Modified Paths:
--------------
    trunk/tp/Texinfo/Convert/XSParagraph/TestXS.pm

Modified: trunk/tp/Texinfo/Convert/XSParagraph/TestXS.pm
===================================================================
--- trunk/tp/Texinfo/Convert/XSParagraph/TestXS.pm      2015-11-10 12:42:23 UTC 
(rev 6776)
+++ trunk/tp/Texinfo/Convert/XSParagraph/TestXS.pm      2015-11-10 16:34:37 UTC 
(rev 6777)
@@ -51,6 +51,7 @@
 # Other values are treated at the moment as 'default'.
 
 #my $TEXINFO_XS = 'debug';
+my $TEXINFO_XS;
 if (!defined($TEXINFO_XS)) {
   $TEXINFO_XS = '';
 }