fixed bug in parser

bibtexbrowser.php

@@ -521,8 +521,8 @@ function StateBasedBibtexParser($bibfilename, &$delegate) {
 @define('GETVALUEDELIMITEDBYCURLYBRACKETS_1NESTEDLEVEL_ESCAPED',10);
 @define('GETVALUEDELIMITEDBYCURLYBRACKETS_2NESTEDLEVEL',11);
 @define('GETVALUEDELIMITEDBYCURLYBRACKETS_2NESTEDLEVEL_ESCAPED',12);
-@define('GETVALUEDELIMITEDBYCURLYBRACKETS_3NESTEDLEVEL',11);
-@define('GETVALUEDELIMITEDBYCURLYBRACKETS_3NESTEDLEVEL_ESCAPED',12);
+@define('GETVALUEDELIMITEDBYCURLYBRACKETS_3NESTEDLEVEL',13);
+@define('GETVALUEDELIMITEDBYCURLYBRACKETS_3NESTEDLEVEL_ESCAPED',14);
 
 
 $state=NOTHING;