fixed assignment with no effect

a variable was wrongfully assigned to itself insted.

Bug: 10998131
Change-Id: Ia563e9f8aa43e264a6664d81d917b7517e1c89b5
diff --git a/bta/hh/bta_hh_utils.c b/bta/hh/bta_hh_utils.c
index 0c67513..c7c783c 100644
--- a/bta/hh/bta_hh_utils.c
+++ b/bta/hh/bta_hh_utils.c
@@ -335,7 +335,7 @@
         APPL_TRACE_DEBUG1("found keycode %02x ",  this_report[xx]);
 #endif
         p_data->caps_lock   = p_kb->caps_lock;
-        p_kb->num_lock      = p_kb->num_lock;
+        p_data->num_lock      = p_kb->num_lock;
     }
 
     memset (p_kb->last_report, 0, BTA_HH_MAX_RPT_CHARS);