setup.sh: Fix when running on unsupported OS.

diff --git a/setup.sh b/setup.sh
index da09a70eb5bfd7c8b7b433b9aab30ec317b75439..5aaceac4c944a1e93833131993e339e41e9e1bf3 100755 (executable)
--- a/setup.sh
+++ b/setup.sh
@@ -34,7 +34,7 @@ if installed X; then
     sed 's/^#/!/' Xdefaults > Xdefaults.tmp
     mv Xdefaults.tmp Xdefaults
 
-    if [ `os` != darwin ]; then
+    if [ x`os` != xdarwin ]; then
         link xinitrc ~/.xinitrc
     fi
     link xmodmaprc ~/.xmodmaprc