Cleanup patch from Denis Vlasenko.  Mostly variants of removing the if(x)
from before "if(x) free(x)".
diff --git a/e2fsprogs/ext2fs/dblist.c b/e2fsprogs/ext2fs/dblist.c
index 0cf5698..73313fa 100644
--- a/e2fsprogs/ext2fs/dblist.c
+++ b/e2fsprogs/ext2fs/dblist.c
@@ -99,8 +99,7 @@
 		fs->dblist = dblist;
 	return 0;
 cleanup:
-	if (dblist)
-		ext2fs_free_mem(&dblist);
+	ext2fs_free_mem(&dblist);
 	return retval;
 }