modem: fix grr_st_packet_access_action(): shift rr->cr_hist properly

Pass size in bytes to memcpy(), not number of elements!

Change-Id: I687435f5458e766d9d61143d6e4255f089fe1caf
Fixes: 6db5f8b9c "modem: get rid of app_data.chan_req, use ms->rrlayer"
Related: OS#5500, OS#6131
---
M src/host/layer23/src/modem/grr.c
1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/src/host/layer23/src/modem/grr.c b/src/host/layer23/src/modem/grr.c
index a029dd8..4e29909 100644
--- a/src/host/layer23/src/modem/grr.c
+++ b/src/host/layer23/src/modem/grr.c
@@ -688,7 +688,8 @@
 		}
 
 		/* shift the CHANNEL REQUEST history buffer */
-		memmove(&rr->cr_hist[1], &rr->cr_hist[0], ARRAY_SIZE(rr->cr_hist) - 1);
+		memmove(&rr->cr_hist[1], &rr->cr_hist[0],
+			sizeof(rr->cr_hist) - sizeof(rr->cr_hist[0]));
 		/* store the new entry */
 		rr->cr_hist[0].ref = *ref;
 		rr->cr_hist[0].ref.ra = rr->cr_ra;

