[RFA 08/13] Fix ravenscar-thread.c to use arch_ops

[Tom Tromey <tom@tromey.com>]

The change to turn target ops into methods accidentally introduced a
bug in ravenscar-thread.c, changing some calls that were using
"arch_ops" to use the target beneath.

This patch changes ravenscar-thread.c to use these variables where
appropriate.

gdb/ChangeLog
2018-07-12  Tom Tromey  <tom@tromey.com>

	* ravenscar-thread.c (ravenscar_thread_target::store_registers):
	Use arch_ops.
	(ravenscar_thread_target::prepare_to_store): Likewise.
---
 gdb/ChangeLog          | 6 ++++++
 gdb/ravenscar-thread.c | 4 ++--
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/gdb/ravenscar-thread.c b/gdb/ravenscar-thread.c
index 8bd31a5a725..e60fad87466 100644
--- a/gdb/ravenscar-thread.c
+++ b/gdb/ravenscar-thread.c
@@ -442,7 +442,7 @@ ravenscar_thread_target::store_registers (struct regcache *regcache,
       struct ravenscar_arch_ops *arch_ops
 	= gdbarch_ravenscar_ops (gdbarch);
 
-      beneath ()->store_registers (regcache, regnum);
+      arch_ops->to_store_registers (regcache, regnum);
     }
   else
     beneath ()->store_registers (regcache, regnum);
@@ -461,7 +461,7 @@ ravenscar_thread_target::prepare_to_store (struct regcache *regcache)
       struct ravenscar_arch_ops *arch_ops
 	= gdbarch_ravenscar_ops (gdbarch);
 
-      beneath ()->prepare_to_store (regcache);
+      arch_ops->to_prepare_to_store (regcache);
     }
   else
     beneath ()->prepare_to_store (regcache);
-- 
2.13.6