patch 8.1.0012: misplaced #endif

Problem:    Misplaced #endif.
Solution:   Move the #endif to after the expression. (David Binderman)
diff --git a/src/fileio.c b/src/fileio.c
index 98631e0..d34605c 100644
--- a/src/fileio.c
+++ b/src/fileio.c
@@ -714,8 +714,8 @@
 			&& st.st_gid != swap_st.st_gid
 # ifdef HAVE_FCHOWN
 			&& fchown(curbuf->b_ml.ml_mfp->mf_fd, -1, st.st_gid)
-# endif
 									  == -1
+# endif
 		   )
 		    swap_mode &= 0600;
 	    }