patch 9.1.0996: ComplMatchIns may highlight wrong text

Problem:  ComplMatchIns may highlight wrong text
Solution: don't highlight in case of fuzzy match,
          skip-highlight when not inserting anything
          (glepnir)

closes: #16404

Signed-off-by: glepnir <glephunter@gmail.com>
Signed-off-by: Christian Brabandt <cb@256bit.org>
diff --git a/src/insexpand.c b/src/insexpand.c
index 818b1b9..22f021d 100644
--- a/src/insexpand.c
+++ b/src/insexpand.c
@@ -924,7 +924,10 @@
     int
 ins_compl_col_range_attr(int col)
 {
-    if (col >= compl_col && col < compl_ins_end_col)
+    if ((get_cot_flags() & COT_FUZZY))
+	return -1;
+
+    if (col >= (compl_col + (int)compl_leader.length) && col < compl_ins_end_col)
 	return syn_name2attr((char_u *)"ComplMatchIns");
 
     return -1;