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/proto/option.pro b/src/proto/option.pro
index 9425bc7..cef998b 100644
--- a/src/proto/option.pro
+++ b/src/proto/option.pro
@@ -64,7 +64,7 @@
 void set_iminsert_global(void);
 void set_imsearch_global(void);
 void set_context_in_set_cmd(expand_T *xp, char_u *arg, int opt_flags);
-int ExpandSettings(expand_T *xp, regmatch_T *regmatch, char_u *fuzzystr, int *numMatches, char_u ***matches);
+int ExpandSettings(expand_T *xp, regmatch_T *regmatch, char_u *fuzzystr, int *numMatches, char_u ***matches, int do_fuzzy);
 int ExpandOldSetting(int *num_file, char_u ***file);
 int shortmess(int x);
 void vimrc_found(char_u *fname, char_u *envname);