update compiler spec

Author: iurimatias

lib/contracts/compiler.js

@@ -116,7 +116,7 @@ class Compiler {
           compiled_object[className].gasEstimates = contract.gasEstimates;
           compiled_object[className].functionHashes = contract.functionHashes;
           compiled_object[className].abiDefinition = JSON.parse(contract.interface);
-          compiled_object[className].filename = filename
+          compiled_object[className].filename = filename;
         }
 
         callback(null, compiled_object);