Bug 1003921: Use NS_WARN_IF_FALSE instead of NS_WARN_IF to fix warning in mozStorageAsyncStatementExecution.cpp. r=mak

storage/src/mozStorageAsyncStatementExecution.cpp

@@ -19,6 +19,7 @@
 #include "mozStorageStatementData.h"
 #include "mozStorageAsyncStatementExecution.h"
 
+#include "mozilla/DebugOnly.h"
 #include "mozilla/Telemetry.h"
 
 namespace mozilla {
@@ -453,7 +454,9 @@ AsyncExecuteStatements::notifyComplete()
       }
     }
     else {
-      NS_WARN_IF(NS_FAILED(mConnection->rollbackTransactionInternal(mNativeConnection)));
+      DebugOnly<nsresult> rv =
+        mConnection->rollbackTransactionInternal(mNativeConnection);
+      NS_WARN_IF_FALSE(NS_SUCCEEDED(rv), "Transaction failed to rollback");
     }
     mHasTransaction = false;
   }