fix build

R=r
CC=golang-dev
https://golang.org/cl/790041

diff --git a/src/pkg/testing/regexp.go b/src/pkg/testing/regexp.go
index de30a13f9189b879197e2819e84d5896212f7dcd..cd37699ce3e7aafb82eba409507e98971952335a 100644 (file)
--- a/src/pkg/testing/regexp.go
+++ b/src/pkg/testing/regexp.go
@@ -615,7 +615,7 @@ func CompileRegexp(str string) (regexp *Regexp, error string) {
        regexp.expr = str
        regexp.inst = make([]instr, 0, 20)
        error = regexp.doParse()
-       if error != nil {
+       if error != "" {
                regexp = nil
        }
        return