Exit immediately if wget fails to download any one of its files. This will

allow future runs to be successful. Fixes #5528


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@35744 a95241bf-73f2-0310-859d-f6bbb57e9c96

data/bin/installoptionalpackage

@@ -253,6 +253,13 @@ function ContainsSubstring()
 }
 
 
+function ErrorExit()
+{
+	echo $1
+	exit 1
+}
+
+
 function Init()
 {
 	
@@ -292,7 +299,7 @@ function GetBuildFile()
 		local baseURL=http://dev.haiku-os.org/export/
 		local revision=`uname -v | awk '{print $1}' | sed -e 's/r//'`
 		local url="${baseURL}${revision}/haiku/trunk/build/jam/${buildfile}"
-		wget -nv ${url} > /dev/null 2>&1
+		wget -q ${url} || ErrorExit "...failed to download $buildfile"
 	fi 
 }