Bandaid for bug 508128. r=waldo

netwerk/test/httpserver/httpd.js

@@ -729,6 +729,11 @@ nsHttpServer.prototype =
     // Fire a pending server-stopped notification if it's our responsibility.
     if (!this._hasOpenConnections() && this._socketClosed)
       this._notifyStopped();
+    // Bug 508125: Add a GC here else we'll use gigabytes of memory running
+    // mochitests. We can't rely on xpcshell doing an automated GC, as that
+    // would interfere with testing GC stuff...
+    if (typeof gc === "function")
+      gc();
   },
 
   /**