Bug 1168048 - Avoid potential null-pointer dereferencing in nsNSSCertificateDB r=keeler

--HG--
extra : histedit_source : 63ddf50ccbd79eb320c52aa47959f76a8b247e21

security/manager/ssl/src/nsNSSCertificateDB.cpp

@@ -937,6 +937,7 @@ loser:
 NS_IMETHODIMP 
 nsNSSCertificateDB::DeleteCertificate(nsIX509Cert *aCert)
 {
+  NS_ENSURE_ARG_POINTER(aCert);
   nsNSSShutDownPreventionLock locker;
   if (isAlreadyShutDown()) {
     return NS_ERROR_NOT_AVAILABLE;
@@ -980,6 +981,7 @@ nsNSSCertificateDB::SetCertTrust(nsIX509Cert *cert,
                                  uint32_t type,
                                  uint32_t trusted)
 {
+  NS_ENSURE_ARG_POINTER(cert);
   nsNSSShutDownPreventionLock locker;
   if (isAlreadyShutDown()) {
     return NS_ERROR_NOT_AVAILABLE;