abg-ir.cc: Remove duplicated line of code

The commit

dbef379a Support incomplete enums in core and diff code.

added a duplicated line of code in error. This commit removes it.

	* src/abg-ir.cc (decl_base::set_definition_of_declaration):
	Remove duplicated assignment statement.

Signed-off-by: Giuliano Procida <gprocida@google.com>
1 file changed