Allow constant byte arrays.

Changelog.md

@@ -18,6 +18,7 @@ Features:
 Bugfixes:
  * ABI JSON: Include all overloaded events.
  * Parser: Crash fix related to parseTypeName.
+ * Type Checker: Allow constant byte arrays.
 
 ### 0.4.16 (2017-08-24)
 

libsolidity/analysis/TypeChecker.cpp

@@ -623,7 +623,7 @@ bool TypeChecker::visit(VariableDeclaration const& _variable)
 		{
 			bool allowed = false;
 			if (auto arrayType = dynamic_cast<ArrayType const*>(_variable.type().get()))
-				allowed = arrayType->isString();
+				allowed = arrayType->isByteArray();
 			if (!allowed)
 				m_errorReporter.typeError(_variable.location(), "Constants of non-value type not yet implemented.");
 		}