Fix coverity 1026714. Modulo by zero. In fact an operator precedence …

…error, fixed by applying brackets in the correct place.

mythtv/libs/libmythfreemheg/Programs.cpp

@@ -384,7 +384,7 @@ void MHResidentProgram::CallProgram(bool fIsFork, const MHObjectRef &success, co
             {
                 int nLimit = GetInt(args.GetAt(0), engine);
                 MHParameter *pResInt = args.GetAt(1);
-                int r = random() % nLimit + 1;
+                int r = random() % (nLimit + 1);
                 engine->FindObject(
                     *(pResInt->GetReference()))->SetVariableValue(r);
                 SetSuccessFlag(success, true, engine);