bt: audio: Avoid hiding outer parameter

cap_stream is re-declared inside a for loop in
bt_cap_initiator_qos_configured.

Signed-off-by: Flavio Ceolin <flavio.ceolin@intel.com>
diff --git a/subsys/bluetooth/audio/cap_initiator.c b/subsys/bluetooth/audio/cap_initiator.c
index 24c05dd..5f321dd 100644
--- a/subsys/bluetooth/audio/cap_initiator.c
+++ b/subsys/bluetooth/audio/cap_initiator.c
@@ -988,8 +988,8 @@
 	cap_set_subproc(CAP_UNICAST_SUBPROC_TYPE_ENABLE);
 
 	for (size_t i = 0U; i < active_proc.stream_cnt; i++) {
-		struct bt_cap_stream *cap_stream = active_proc.streams[i];
-		struct bt_bap_stream *bap_stream = &cap_stream->bap_stream;
+		struct bt_cap_stream *cap_stream_active = active_proc.streams[i];
+		struct bt_bap_stream *bap_stream = &cap_stream_active->bap_stream;
 		int err;
 
 		/* TODO: Add metadata */
@@ -998,7 +998,7 @@
 					     bap_stream->codec->meta_count);
 		if (err != 0) {
 			LOG_DBG("Failed to enable stream %p: %d",
-				cap_stream, err);
+				cap_stream_active, err);
 
 			/* End or mark procedure as aborted.
 			 * If we have sent any requests over air, we will abort