8g: call throwindex for array out of bounds
8g: call throwindex for array out of bounds

R=ken2
http://codereview.appspot.com/160043

tv42/old-go,apparentlymart/golang,bdwalton/debian-golang,nightlyone/golang,apparentlymart/golang,bdwalton/debian-golang,bdwalton/debian-golang,h8liu/golang,bdwalton/debian-golang,ssrl/go,apparentlymart/golang,ssrl/go,gnanderson/go,dsriram/golang,pombredanne/go-deleteme,pombredanne/go-deleteme,ssrl/go,tianon/debian-golang,dsriram/golang,pombredanne/go-deleteme,nightlyone/golang,tv42/old-go,dsriram/golang,dsriram/golang,nightlyone/golang,ssrl/go,gnanderson/go,h8liu/golang,pombredanne/go-deleteme,gnanderson/go,bdwalton/debian-golang,tianon/debian-golang,apparentlymart/golang,nightlyone/golang,nightlyone/golang,h8liu/golang,tianon/debian-golang,tianon/debian-golang,gnanderson/go,pombredanne/go-deleteme,tianon/debian-golang,gnanderson/go,gnanderson/go,bdwalton/debian-golang,tv42/old-go,bdwalton/debian-golang,pombredanne/go-deleteme,tianon/debian-golang,ssrl/go,nightlyone/golang,h8liu/golang,ssrl/go,dsriram/golang,pombredanne/go-deleteme,ssrl/go,tianon/debian-golang,tv42/old-go,nightlyone/golang,apparentlymart/golang,tianon/debian-golang,h8liu/golang,tv42/old-go,h8liu/golang,dsriram/golang,h8liu/golang,bdwalton/debian-golang,apparentlymart/golang,tv42/old-go,tv42/old-go,apparentlymart/golang,dsriram/golang,gnanderson/go