Fix double slash on URL when switching account.

One too many ending forward slashes causes OpenIdService to
redirect url to http://localhost:8080//

Remove the extra slash on switch account.

Bug: Issue 3664
Change-Id: I7fc66aaacc0c2f49a837222b2c2cf67a84ac967d
diff --git a/gerrit-gwtui/src/main/java/com/google/gerrit/client/UserPopupPanel.java b/gerrit-gwtui/src/main/java/com/google/gerrit/client/UserPopupPanel.java
index cfb7e92..1857043 100644
--- a/gerrit-gwtui/src/main/java/com/google/gerrit/client/UserPopupPanel.java
+++ b/gerrit-gwtui/src/main/java/com/google/gerrit/client/UserPopupPanel.java
@@ -55,7 +55,7 @@
         switchAccount.setHref(Gerrit.getConfig().getSwitchAccountUrl());
       } else if (Gerrit.getConfig().getAuthType() == AuthType.DEVELOPMENT_BECOME_ANY_ACCOUNT
           || Gerrit.getConfig().getAuthType() == AuthType.OPENID) {
-        switchAccount.setHref(Gerrit.selfRedirect("/login/"));
+        switchAccount.setHref(Gerrit.selfRedirect("/login"));
       } else {
         switchAccount.removeFromParent();
         switchAccount = null;