InnoDB: Cleanup and after review fixes.

innobase/btr/btr0btr.c:
  Code formatting: add blank line before "goto", do not indent labels
innobase/btr/btr0cur.c:
  Code formatting: add blank line before "goto"
innobase/btr/btr0pcur.c:
  btr_pcur_restore_position(): Replace assertion on cursor->pos_state
  with if condition, to provide better diagnostics. Restore ut_a()
  assertions on cursor->old_rec and cursor->old_n_fields.
innobase/btr/btr0sea.c:
  btr_search_check_guess(): Declare prev_rec and next_rec closer
  to usage.  Add blank lines before goto statements.

innobase/btr/btr0btr.c

@@ -1160,12 +1160,13 @@ btr_page_get_split_rec_to_right(
 		next_rec = page_rec_get_next(insert_point);
 
 		if (page_rec_is_supremum(next_rec)) {
-		split_at_new:
+split_at_new:
 			/* Split at the new record to insert */
 	     		*split_rec = NULL;
 		} else {
 			rec_t*	next_next_rec = page_rec_get_next(next_rec);
 			if (page_rec_is_supremum(next_next_rec)) {
+
 				goto split_at_new;
 			}
 
@@ -1274,6 +1275,7 @@ btr_page_get_sure_split_rec(
 
 				if (rec == ins_rec) {
 					rec = NULL;
+
 					goto func_exit;
 				} else if (rec == NULL) {
 					next_rec = page_rec_get_next(ins_rec);
@@ -1286,7 +1288,7 @@ btr_page_get_sure_split_rec(
 				}
                     	}
 
-		func_exit:
+func_exit:
 			if (UNIV_LIKELY_NULL(heap)) {
 				mem_heap_free(heap);
 			}

innobase/btr/btr0cur.c

@@ -1381,6 +1381,7 @@ btr_cur_parse_update_in_place(
 	ptr = row_upd_index_parse(ptr, end_ptr, heap, &update);
 
 	if (!ptr || !page) {
+
 		goto func_exit;
 	}
 

innobase/btr/btr0pcur.c

@@ -205,15 +205,15 @@ btr_pcur_restore_position(
 	ulint		old_mode;
 	mem_heap_t*	heap;
 
-	ut_ad(cursor->pos_state == BTR_PCUR_WAS_POSITIONED
-			|| cursor->pos_state == BTR_PCUR_IS_POSITIONED);
-	if (UNIV_UNLIKELY(cursor->old_stored != BTR_PCUR_OLD_STORED)) {
+	if (UNIV_UNLIKELY(cursor->old_stored != BTR_PCUR_OLD_STORED)
+	    || UNIV_UNLIKELY(cursor->pos_state != BTR_PCUR_WAS_POSITIONED
+			     && cursor->pos_state != BTR_PCUR_IS_POSITIONED)) {
 		ut_print_buf(stderr, (const byte*)cursor, sizeof(btr_pcur_t));
 		if (cursor->trx_if_known) {
 			trx_print(stderr, cursor->trx_if_known);
 		}
 		
-		ut_a(0);
+		ut_error;
 	}
 
 	if (UNIV_UNLIKELY(cursor->rel_pos == BTR_PCUR_AFTER_LAST_IN_TREE
@@ -233,8 +233,8 @@ btr_pcur_restore_position(
 		return(FALSE);
 	}
 	
-	ut_ad(cursor->old_rec);
-	ut_ad(cursor->old_n_fields);
+	ut_a(cursor->old_rec);
+	ut_a(cursor->old_n_fields);
 
 	page = btr_cur_get_page(btr_pcur_get_btr_cur(cursor));
 

innobase/btr/btr0sea.c

@@ -545,8 +545,6 @@ btr_search_check_guess(
 	mtr_t*		mtr)	/* in: mtr */
 {
 	rec_t*		rec;
-	rec_t*		prev_rec;
-	rec_t*		next_rec;
 	ulint		n_unique;
 	ulint		match;
 	ulint		bytes;
@@ -609,6 +607,7 @@ btr_search_check_guess(
 	bytes = 0;
 
 	if ((mode == PAGE_CUR_G) || (mode == PAGE_CUR_GE)) {
+		rec_t*	prev_rec;
 
 		ut_ad(!page_rec_is_infimum(rec));
 		
@@ -617,6 +616,7 @@ btr_search_check_guess(
 		if (page_rec_is_infimum(prev_rec)) {
 			success = btr_page_get_prev(
 				buf_frame_align(prev_rec), mtr) == FIL_NULL;
+
 			goto exit_func;
 		}
 
@@ -631,15 +631,16 @@ btr_search_check_guess(
 		}
 
 		goto exit_func;
-	}
+	} else {
+		rec_t*	next_rec;
 
 		ut_ad(!page_rec_is_supremum(rec));
 	
 		next_rec = page_rec_get_next(rec);
 
 		if (page_rec_is_supremum(next_rec)) {
-		if (btr_page_get_next(buf_frame_align(next_rec), mtr)
-							== FIL_NULL) {
+			if (btr_page_get_next(
+				buf_frame_align(next_rec), mtr) == FIL_NULL) {
 
 				cursor->up_match = 0;
 				success = TRUE;
@@ -658,6 +659,7 @@ btr_search_check_guess(
 		} else {
 			success = cmp != 1;
 		}
+	}
 exit_func:
 	if (UNIV_LIKELY_NULL(heap)) {
 		mem_heap_free(heap);