runtime: Plan 9, 32-bit: fix build by updating call to open()

With the global redefinition of runtime·open by CL 7543043,
we need to provide a third argument and remove the cast
to the string.

Fixes build on 386 version of Plan 9.

R=khr, rsc, rminnich, ality
CC=golang-dev
https://golang.org/cl/7644047

diff --git a/src/pkg/runtime/time_plan9_386.c b/src/pkg/runtime/time_plan9_386.c
index a29d45715c44118f29a4b465f616d6dc7f0580f0..fc08a90d6d655451736eba109216fbcbfa23d2f6 100644 (file)
--- a/src/pkg/runtime/time_plan9_386.c
+++ b/src/pkg/runtime/time_plan9_386.c
@@ -24,7 +24,7 @@ runtime·nanotime(void)
        // file descriptor) is roughly four times slower
        // in 9vx on a 2.16 GHz Intel Core 2 Duo.
 
-       if(fd < 0 && (fd = runtime·open((byte*)"/dev/bintime", OREAD|OCEXEC)) < 0)
+       if(fd < 0 && (fd = runtime·open("/dev/bintime", OREAD|OCEXEC, 0)) < 0)
                return 0;
        if(runtime·pread(fd, b, sizeof b, 0) != sizeof b)
                return 0;