Bug 495730 - xpcshell-tests: each test leaks 3 nsStringBuffer, after (harness) bug 483062 landing; (Ev1) xpcshell.cpp: s/null/nsnull/; bustage fix

js/src/xpconnect/shell/xpcshell.cpp

@@ -1800,7 +1800,7 @@ main(int argc, char **argv, char **envp)
     // Shut down the crashreporter service to prevent leaking some strings it holds.
     if (crashReporter) {
         crashReporter->SetEnabled(PR_FALSE);
-        crashReporter = null;
+        crashReporter = nsnull;
     }
 #endif