Moved around AUTOBUILD var tests so they make more sense.

--HG--
branch : autobuild-package-skeleton

build-cmd.sh

@@ -5,14 +5,14 @@ set -x
 # make errors fatal
 set -e
 
-if [ "$OSTYPE" = "cygwin" ] ; then
-    export AUTOBUILD="$(cygpath -u $AUTOBUILD)"
-fi
-
 if [ -z "$AUTOBUILD" ] ; then 
     fail
 fi
 
+if [ "$OSTYPE" = "cygwin" ] ; then
+    export AUTOBUILD="$(cygpath -u $AUTOBUILD)"
+fi
+
 # load autbuild provided shell functions and variables
 set +x
 eval "$("$AUTOBUILD" source_environment)"