patch 8.2.4288: preprocessor indents are inconsistent

Problem:    Preprocessor indents are inconsistent.
Solution:   Fix preprocessor indents. (Ken Takata, closes #9691)
diff --git a/src/ops.c b/src/ops.c
index 418c46d..8c46303 100644
--- a/src/ops.c
+++ b/src/ops.c
@@ -3667,9 +3667,9 @@
 		curbuf->b_visual.vi_mode = VIsual_mode;
 		restore_visual_mode();
 		curbuf->b_visual.vi_curswant = curwin->w_curswant;
-# ifdef FEAT_EVAL
+#ifdef FEAT_EVAL
 		curbuf->b_visual_mode_eval = VIsual_mode;
-# endif
+#endif
 	    }
 
 	    // In Select mode, a linewise selection is operated upon like a