patch 8.2.2430: :vimgrep expands wildcards twice

Problem:    :vimgrep expands wildcards twice.
Solution:   Do not expand wildcards a second time.
diff --git a/src/arglist.c b/src/arglist.c
index 117116c..503cbd9 100644
--- a/src/arglist.c
+++ b/src/arglist.c
@@ -315,10 +315,10 @@
 	return FAIL;
     if (wig == TRUE)
 	i = expand_wildcards(ga.ga_len, (char_u **)ga.ga_data,
-					fcountp, fnamesp, EW_FILE|EW_NOTFOUND);
+			     fcountp, fnamesp, EW_FILE|EW_NOTFOUND|EW_NOTWILD);
     else
 	i = gen_expand_wildcards(ga.ga_len, (char_u **)ga.ga_data,
-					fcountp, fnamesp, EW_FILE|EW_NOTFOUND);
+			     fcountp, fnamesp, EW_FILE|EW_NOTFOUND|EW_NOTWILD);
 
     ga_clear(&ga);
     return i;