Merge pull request #8 from Yannic/fix-124

Fix google#124
Bloombox · Jul 3, 2019 · c67682c · c67682c
2 parents 98e8ac3 + cb0e02f
commit c67682c
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/src/com/google/common/css/RecordingSubstitutionMap.java b/src/com/google/common/css/RecordingSubstitutionMap.java
@@ -88,7 +88,9 @@ public void initializeWithMappings(Map<? extends String, ? extends String> newMa
     Preconditions.checkState(mappings.isEmpty());
     if (!newMappings.isEmpty()) {
       mappings.putAll(newMappings);
-      ((SubstitutionMap.Initializable) delegate).initializeWithMappings(newMappings);
+      if (delegate instanceof SubstitutionMap.Initializable) {
+        ((SubstitutionMap.Initializable) delegate).initializeWithMappings(newMappings);
+      }
     }
   }