patch 8.2.2922: computing array length is done in various ways

Problem:    Computing array length is done in various ways.
Solution:   Use ARRAY_LENGTH everywhere. (Ken Takata, closes #8305)
diff --git a/src/search.c b/src/search.c
index 24dcd5a..bbf67d5 100644
--- a/src/search.c
+++ b/src/search.c
@@ -4444,7 +4444,7 @@
 	    if (fuzzy_match_recursive(fuzpat, next_char, strIdx + 1,
 			&recursiveScore, strBegin, strLen, matches,
 			recursiveMatches,
-			sizeof(recursiveMatches)/sizeof(recursiveMatches[0]),
+			ARRAY_LENGTH(recursiveMatches),
 			nextMatch, recursionCount))
 	    {
 		// Pick best recursive score