a few ignores for nvprmsaa4

expectations/gm/Test-Win8-ShuttleA-GTX660-x86_64-Debug/expected-results.json

Index: expectations/gm/Test-Win8-ShuttleA-GTX660-x86_64-Debug/expected-results.json
diff --git a/expectations/gm/Test-Win8-ShuttleA-GTX660-x86_64-Debug/expected-results.json b/expectations/gm/Test-Win8-ShuttleA-GTX660-x86_64-Debug/expected-results.json
index 36ec126a2468556f635508f9e4b762adef5f1318..fcf33536262ba708382c17bb3adef0de1e9b6a3e 100644
--- a/expectations/gm/Test-Win8-ShuttleA-GTX660-x86_64-Debug/expected-results.json
+++ b/expectations/gm/Test-Win8-ShuttleA-GTX660-x86_64-Debug/expected-results.json
@@ -18684,6 +18684,7 @@
           16258109186950173986
         ]
       ], 
+      "ignore-failure": true,
       "reviewed-by-human": true
     }, 
     "shadertext_pdf-poppler.png": {
@@ -21924,4 +21925,4 @@
       "reviewed-by-human": true
     }
   }
-}
+}