- install yum-arch completion only if we also have yum

bash_completion

@@ -1,6 +1,6 @@
 #   bash_completion - some programmable completion functions for bash 2.05b
 #
-#   $Id: bash_completion,v 1.680 2004/02/09 22:02:48 ianmacd Exp $
+#   $Id: bash_completion,v 1.681 2004/02/09 22:06:01 ianmacd Exp $
 #
 #   Copyright (C) Ian Macdonald <ian@caliban.org>
 #
@@ -5251,7 +5251,7 @@ _mc()
 
 # yum(8) completion
 #
-have yum &&
+have yum && {
 _yum()
 {
 	local cur prev special
@@ -5333,6 +5333,7 @@ _yum_arch()
 
 }
 complete -F _yum_arch $filenames yum-arch
+}
 
 # ImageMagick completion
 #