Roll external/effcee/ 2c97e5689..a0455557f (2 commits)

google/effcee@2c97e56...a045555

Created with:
  roll-dep external/effcee

DEPS

@@ -5,7 +5,7 @@ vars = {
 
   'abseil_revision': 'ce986ae569c3b11ce2f2e53ed00c0b597bdfed58',
 
-  'effcee_revision': '2c97e5689ed8d7ab6ae5820f884f03a601ae124b',
+  'effcee_revision': 'a0455557f48e617ed5fecb3143c4ad2dbd39cf40',
 
   'googletest_revision': 'e54519b09463cec3aea77a1739e02c97ca766da5',