minor style correction, parentheses around return value

git-svn-id: svn://bind10.isc.org/svn/bind10/branches/trac310@2800 e5f2f494-b856-4b98-b285-d166d9295462

src/lib/config/ccsession.cc

@@ -119,7 +119,7 @@ parseAnswer(int &rcode, ConstElementPtr msg) {
 
 ConstElementPtr
 createCommand(const std::string& command) {
-    return createCommand(command, ElementPtr());
+    return (createCommand(command, ElementPtr()));
 }
 
 ConstElementPtr