g: fix hg root handling

! needs to have a space after it to do the right thing...

Author: jsoref

g

@@ -8,7 +8,7 @@ if [ ! -z "$f" ]; then
 shift
 fi
 
-if [ -n "$F_USE_GREPR" ] || !hg root 2>/dev/null; then
+if [ -n "$F_USE_GREPR" ] || ! hg root >/dev/null 2>/dev/null; then
   grep --color $f -ir -- "$g" *
 else
   hg files -0 | xargs -0 grep -i --color $f -- "$g"