ld: fix Plan 9 build

R=golang-dev, jas, bradfitz
CC=golang-dev
https://golang.org/cl/43420043

diff --git a/src/cmd/ld/pobj.c b/src/cmd/ld/pobj.c
index 08d44f63763394129e9e69015532ea316e593166..0ce23eb9933b5cd92ad313ea7f06d661cfe21eed 100644 (file)
--- a/src/cmd/ld/pobj.c
+++ b/src/cmd/ld/pobj.c
@@ -138,7 +138,7 @@ main(int argc, char *argv[])
        if(HEADTYPE == -1)
                HEADTYPE = headtype(goos);
        ctxt->headtype = HEADTYPE;
-       if (headstring == NULL)
+       if (headstring == nil)
                headstring = headstr(HEADTYPE);
 
        archinit();