patch 8.2.1678: crash when using ":set" after ":ownsyntax"
Problem: Crash when using ":set" after ":ownsyntax".
Solution: Make sure 'spelloptions' is not NULL. (closes #6950)
diff --git a/src/syntax.c b/src/syntax.c
index ccdb203..6025889 100644
--- a/src/syntax.c
+++ b/src/syntax.c
@@ -6316,9 +6316,11 @@
#ifdef FEAT_SPELL
// TODO: keep the spell checking as it was.
curwin->w_p_spell = FALSE; // No spell checking
+ // make sure option values are "empty_option" instead of NULL
clear_string_option(&curwin->w_s->b_p_spc);
clear_string_option(&curwin->w_s->b_p_spf);
clear_string_option(&curwin->w_s->b_p_spl);
+ clear_string_option(&curwin->w_s->b_p_spo);
#endif
clear_string_option(&curwin->w_s->b_syn_isk);
}