strings: fix off-by-one error in test
Previously it would panic because of out-of-bound access
if s1 is longer than s2.
LGTM=iant
R=golang-codereviews, iant
CC=golang-codereviews
https://golang.org/cl/90110043
diff --git a/src/pkg/strings/strings_test.go b/src/pkg/strings/strings_test.go
index 8347818..95a4201 100644
--- a/src/pkg/strings/strings_test.go
+++ b/src/pkg/strings/strings_test.go
@@ -652,7 +652,7 @@
e1 := Split(s1, "")
e2 := Split(s2, "")
for i, c1 := range e1 {
- if i > len(e2) {
+ if i >= len(e2) {
break
}
r1, _ := utf8.DecodeRuneInString(c1)
