Also quote a path here, which may have spaces, notably on windows

git-svn-id: https://zxing.googlecode.com/svn/trunk@254 59b500cc-1b3d-0410-9834-0bbf25fbcc57
diff --git a/rim/build.xml b/rim/build.xml
index aee26c0..09ad769 100644
--- a/rim/build.xml
+++ b/rim/build.xml
@@ -76,7 +76,7 @@
 
     <mkdir dir="build-j2me"/>
     <exec executable="${WTK-home}/bin/preverify1.1" failonerror="true">
-      <arg line="-classpath ${rim-api-jar} -d build-j2me build"/>
+      <arg line="-classpath '${rim-api-jar}' -d build-j2me build"/>
     </exec>
 
     <copy todir="build-j2me">