Remove extra slash from request URL of Showcase source files to be compatible with servers that do not all double slashses.

Review at http://gwt-code-reviews.appspot.com/961801

Review by: kprobst@google.com

git-svn-id: https://google-web-toolkit.googlecode.com/svn/trunk@8940 8db76d5a-ed1c-0410-87a9-c151d255dfc7
diff --git a/samples/showcase/src/com/google/gwt/sample/showcase/client/ContentWidget.java b/samples/showcase/src/com/google/gwt/sample/showcase/client/ContentWidget.java
index ca97c30..2610237 100644
--- a/samples/showcase/src/com/google/gwt/sample/showcase/client/ContentWidget.java
+++ b/samples/showcase/src/com/google/gwt/sample/showcase/client/ContentWidget.java
@@ -198,7 +198,7 @@
       String className = this.getClass().getName();
       className = className.substring(className.lastIndexOf(".") + 1);
       sendSourceRequest(
-          rc, ShowcaseConstants.DST_SOURCE_RAW + "/" + filename + ".html");
+          rc, ShowcaseConstants.DST_SOURCE_RAW + filename + ".html");
     }
   }
 
@@ -264,7 +264,7 @@
       String className = this.getClass().getName();
       className = className.substring(className.lastIndexOf(".") + 1);
       sendSourceRequest(
-          rc, ShowcaseConstants.DST_SOURCE_EXAMPLE + "/" + className + ".html");
+          rc, ShowcaseConstants.DST_SOURCE_EXAMPLE + className + ".html");
     }
   }