gdb/

gdb/
	Code cleanup.
	* objfiles.c (allocate_objfile) <objfile->name != NULL>: Remove.
	(free_objfile) <objfile->name != NULL>: Remove the conditional around
	xfree.
	* objfiles.h (struct objfile) <name>: New comment it is never NULL.
	* python/py-auto-load.c (auto_load_new_objfile) <!objfile->name>:
	Remove.
	* python/py-objfile.c (objfpy_get_filename) <obj->objfile->name>
	Remove the conditional.
	* python/py-progspace.c (pspy_get_filename) <objfile->name>: Likewise.