CMap::parse2: Initialize end

fixes oss-fuzz/8747
diff --git a/poppler/CMap.cc b/poppler/CMap.cc
index 60562e6..614009b 100644
--- a/poppler/CMap.cc
+++ b/poppler/CMap.cc
@@ -234,7 +234,7 @@
   PSTokenizer *pst;
   char tok1[256], tok2[256], tok3[256];
   int n1, n2, n3;
-  Guint start = 0, end, code;
+  Guint start = 0, end = 0, code;
 
   pst = new PSTokenizer(getCharFunc, data);
   pst->getToken(tok1, sizeof(tok1), &n1);