Fix make check-c-globals

Author: vstinner

Tools/c-analyzer/cpython/ignored.tsv

@@ -760,6 +760,7 @@ Modules/clinic/md5module.c.h	_md5_md5	_keywords	-
 Modules/clinic/grpmodule.c.h	grp_getgrgid	_keywords	-
 Modules/clinic/grpmodule.c.h	grp_getgrnam	_keywords	-
 Objects/object.c	-	constants	static PyObject*[]
+Objects/dictobject.c	-	PyFrozenDict_Type	-
 
 
 ## False positives