Cxx: double the size of array for tracking the deeply nested namespaces

Signed-off-by: Masatake YAMATO <[email protected]>

#3166 reported a real world example using deeply nested namespaces.

Author: masatake

Units/parser-cxx.r/bug-issue-3166.d/expected.tags

@@ -7,7 +7,7 @@ object	input.cxx	/^namespace deamer::language::type::definition::object::main::t
 main	input.cxx	/^namespace deamer::language::type::definition::object::main::threat::deamer::lexicon$/;"	n	namespace:deamer::language::type::definition::object	file:	end:42
 threat	input.cxx	/^namespace deamer::language::type::definition::object::main::threat::deamer::lexicon$/;"	n	namespace:deamer::language::type::definition::object::main	file:	end:42
 deamer	input.cxx	/^namespace deamer::language::type::definition::object::main::threat::deamer::lexicon$/;"	n	namespace:deamer::language::type::definition::object::main::threat	file:	end:42
-lexicon	input.cxx	/^namespace deamer::language::type::definition::object::main::threat::deamer::lexicon$/;"	n	namespace:deamer::language::type::definition::object::main::threat::deamer	file:
+lexicon	input.cxx	/^namespace deamer::language::type::definition::object::main::threat::deamer::lexicon$/;"	n	namespace:deamer::language::type::definition::object::main::threat::deamer	file:	end:42
 Type	input.cxx	/^	enum class Type$/;"	g	namespace:deamer::language::type::definition::object::main::threat::deamer::lexicon	file:	end:41
 Unknown	input.cxx	/^		Unknown = 0,$/;"	e	enum:deamer::language::type::definition::object::main::threat::deamer::lexicon::Type	file:
 UnusedTerminal	input.cxx	/^		UnusedTerminal = 1,$/;"	e	enum:deamer::language::type::definition::object::main::threat::deamer::lexicon::Type	file:

parsers/cxx/cxx_parser_namespace.c

@@ -23,7 +23,7 @@
 #include "read.h"
 
 
-#define MAX_NESTED_NAMESPACES 8
+#define MAX_NESTED_NAMESPACES 16
 
 
 bool cxxParserParseNamespace(void)