handle broken test (lynx)

diff --git a/config.sub b/config.sub
index 3ca83dc..a4922bc 100755 (executable)
--- a/config.sub
+++ b/config.sub
@@ -632,7 +632,7 @@ esac
 
 # Decode manufacturer-specific aliases for certain operating systems.
 
-if [ "$os" ]
+if [ x"$os" != x"" ]
 then
 case $os in
        # -solaris* is a basic system type, with this one exception.