patch 8.2.4917: fuzzy expansion of option names is not right

Problem:    Fuzzy expansion of option names is not right.
Solution:   Pass the fuzzy flag down the call chain. (Christian Brabandt,
            closes #10380, closes #10318)
diff --git a/src/cmdexpand.c b/src/cmdexpand.c
index ea8dbfa..c3731cb 100644
--- a/src/cmdexpand.c
+++ b/src/cmdexpand.c
@@ -2787,7 +2787,7 @@
 
     if (xp->xp_context == EXPAND_SETTINGS
 	    || xp->xp_context == EXPAND_BOOL_SETTINGS)
-	ret = ExpandSettings(xp, &regmatch, pat, numMatches, matches);
+	ret = ExpandSettings(xp, &regmatch, pat, numMatches, matches, fuzzy);
     else if (xp->xp_context == EXPAND_MAPPINGS)
 	ret = ExpandMappings(pat, &regmatch, numMatches, matches);
 # if defined(FEAT_EVAL)