updated for version 7.3.511

Problem:    Using a FileReadCmd autocommand that does ":e! {file}" may cause a
	    crash. (Christian Brabandt)
Solution:   Properly restore curwin->w_s.

Author: brammool

src/fileio.c

@@ -8982,6 +8982,10 @@ aucmd_restbuf(aco)
 		    && buf_valid(aco->new_curbuf)
 		    && aco->new_curbuf->b_ml.ml_mfp != NULL)
 	    {
+# if defined(FEAT_SYN_HL) || defined(FEAT_SPELL)
+		if (curwin->w_s == &curbuf->b_s)
+		    curwin->w_s = &aco->new_curbuf->b_s;
+# endif
 		--curbuf->b_nwindows;
 		curbuf = aco->new_curbuf;
 		curwin->w_buffer = curbuf;

src/version.c

@@ -714,6 +714,8 @@ static char *(features[]) =
 
 static int included_patches[] =
 {   /* Add new patch number below this line */
+/**/
+    511,
 /**/
     510,
 /**/