[PATCH] frame.c: Fix the check for FID_STACK_INVALID in frame_id_eq().

[Martin Galvan <martin.galvan@tallertechnologies.com>]

I noticed in frame_id_eq() we were checking for the "l" frame_id being invalid twice instead of checking both "l" and "r", so I corrected it.

gdb/ChangeLog:

2014-11-25  Martin Galvan  <martin.galvan@tallertechnologies.com>

    * frame.c (frame_id_eq): Fix the check for FID_STACK_INVALID.

---

diff --git a/gdb/frame.c b/gdb/frame.c
index 0663af9..135b820 100644
--- a/gdb/frame.c
+++ b/gdb/frame.c
@@ -614,7 +614,7 @@ frame_id_eq (struct frame_id l, struct frame_id r)
        outer_frame_id.  */
     eq = 1;
   else if (l.stack_status == FID_STACK_INVALID
-          || l.stack_status == FID_STACK_INVALID)
+          || r.stack_status == FID_STACK_INVALID)
     /* Like a NaN, if either ID is invalid, the result is false.
        Note that a frame ID is invalid iff it is the null frame ID.  */
     eq = 0;