patch 9.1.0463: no fuzzy-matching support for insert-completion

Problem:  no fuzzy-matching support for insert-completion
Solution: enable insert-mode completion with fuzzy-matching
          using :set completopt+=fuzzy (glepnir).

closes: #14878

Signed-off-by: glepnir <glephunter@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/structs.h b/src/structs.h
index 804581b..bd6977e 100644
--- a/src/structs.h
+++ b/src/structs.h
@@ -4468,6 +4468,7 @@
     char_u	*pum_kind;	// extra kind text (may be truncated)
     char_u	*pum_extra;	// extra menu text (may be truncated)
     char_u	*pum_info;	// extra info
+    int		 pum_score;	// fuzzy match score
 } pumitem_T;
 
 /*