[binutils-gdb] Fix typo in value-dynamic-type

[sergiodj+buildbot@redhat.com]

*** TEST RESULTS FOR COMMIT 1390d0efa6a03a3780541aa8100c7b52402e793d ***

Author: Andy Wingo <wingo@igalia.com>
Branch: master
Commit: 1390d0efa6a03a3780541aa8100c7b52402e793d

Fix typo in value-dynamic-type
gdb/ChangeLog:

	* guile/scm-value.c (gdbscm_value_dynamic_type): Fix typo in which
	we were checking the cached type, not the cached dynamic type.