fix style nit ignored in previous cl

R=rsc
https://golang.org/cl/152110

diff --git a/src/pkg/runtime/Makefile b/src/pkg/runtime/Makefile
index e31073cf2714473346d2d4cc6e2d225733c28e35..08bf278ef40d4e19222023e553172e42113124f5 100644 (file)
--- a/src/pkg/runtime/Makefile
+++ b/src/pkg/runtime/Makefile
@@ -28,7 +28,7 @@ OFILES_386=\
        vlop.$O\
        vlrt.$O\
 
-GOARM ?= 6
+GOARM?=6
 
 # arm-specific object files
 OFILES_arm=\