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/change.c b/src/change.c
index 9f1705f..25a0841 100644
--- a/src/change.c
+++ b/src/change.c
@@ -1638,9 +1638,9 @@
 #ifdef FEAT_CINDENT
     // May do indenting after opening a new line.
     do_cindent = !p_paste && (curbuf->b_p_cin
-#  ifdef FEAT_EVAL
+# ifdef FEAT_EVAL
 		    || *curbuf->b_p_inde != NUL
-#  endif
+# endif
 		)
 	    && in_cinkeys(dir == FORWARD
 		? KEY_OPEN_FORW