Performance tuning - eager rune array conversion

    > wc -l /tmp/list2
     2594098 /tmp/list2

    > time cat /tmp/list2 | fzf-0.10.1-darwin_amd64 -fqwerty > /dev/null

    real    0m5.418s
    user    0m10.990s
    sys     0m1.302s

    > time cat /tmp/list2 | fzf-head -fqwerty > /dev/null

    real    0m4.862s
    user    0m6.619s
    sys     0m0.982s

1 files changed, 4 insertions, 4 deletions

diff --git a/src/util/util.go b/src/util/util.go
index 511de1e5..a0e12696 100644
--- a/src/util/util.go
+++ b/src/util/util.go
@@ -78,13 +78,13 @@ func IsTty() bool {
 	return int(C.isatty(C.int(os.Stdin.Fd()))) != 0
 }
 
-func TrimRight(runes *[]rune) []rune {
+func TrimRight(runes []rune) []rune {
 	var i int
-	for i = len(*runes) - 1; i >= 0; i-- {
-		char := (*runes)[i]
+	for i = len(runes) - 1; i >= 0; i-- {
+		char := runes[i]
 		if char != ' ' && char != '\t' {
 			break
 		}
 	}
-	return (*runes)[0 : i+1]
+	return runes[0 : i+1]
 }