Index: head/sys/vm/vm_map.c
===================================================================
--- head/sys/vm/vm_map.c
+++ head/sys/vm/vm_map.c
@@ -1708,25 +1708,23 @@
 		return;
 
 	prev = entry->prev;
-	if (prev != &map->header) {
-		if (vm_map_mergeable_neighbors(prev, entry)) {
-			vm_map_entry_unlink(map, prev);
-			entry->start = prev->start;
-			entry->offset = prev->offset;
-			if (entry->prev != &map->header)
-				vm_map_entry_resize_free(map, entry->prev);
-			vm_map_merged_neighbor_dispose(map, prev);
-		}
+	if (prev != &map->header &&
+	    vm_map_mergeable_neighbors(prev, entry)) {
+		vm_map_entry_unlink(map, prev);
+		entry->start = prev->start;
+		entry->offset = prev->offset;
+		if (entry->prev != &map->header)
+			vm_map_entry_resize_free(map, entry->prev);
+		vm_map_merged_neighbor_dispose(map, prev);
 	}
 
 	next = entry->next;
-	if (next != &map->header) {
-		if (vm_map_mergeable_neighbors(entry, next)) {
-			vm_map_entry_unlink(map, next);
-			entry->end = next->end;
-			vm_map_entry_resize_free(map, entry);
-			vm_map_merged_neighbor_dispose(map, next);
-		}
+	if (next != &map->header &&
+	    vm_map_mergeable_neighbors(entry, next)) {
+		vm_map_entry_unlink(map, next);
+		entry->end = next->end;
+		vm_map_entry_resize_free(map, entry);
+		vm_map_merged_neighbor_dispose(map, next);
 	}
 }
 /*