MT#59962 xmlrpc2di: `xmlrpcval2amarg()` use static_cast

As this is only a syntactic sugar there is no difference,
but from the style perspective the project tends to
use C++ style.

Change-Id: I3636c48163b3d262b272b5088e03c074e49a9ec3

apps/xmlrpc2di/XMLRPC2DI.cpp

@@ -642,10 +642,10 @@ void XMLRPC2DIServer::xmlrpcval2amargarray(XmlRpcValue& v, AmArg& a,
 void XMLRPC2DIServer::xmlrpcval2amarg(XmlRpcValue& v, AmArg& a) {
   if (v.valid()) {
     switch (v.getType()) {
-    case XmlRpcValue::TypeInt:   {  /* DBG("X->A INT\n"); */ a = (long)v;    }  break;
-    case XmlRpcValue::TypeDouble:{  /*  DBG("X->A DBL\n"); */ a = (double)v; }  break;
-    case XmlRpcValue::TypeString:{  /*  DBG("X->A STR\n"); */ a = ((string)v).c_str(); }  break;
-    case XmlRpcValue::TypeBoolean : { /*   DBG("X->A BOL\n"); */ a = (bool)v;  } break;
+    case XmlRpcValue::TypeInt:   {  /* DBG("X->A INT\n"); */ a = static_cast<long>(v);    }  break;
+    case XmlRpcValue::TypeDouble:{  /*  DBG("X->A DBL\n"); */ a = static_cast<double>(v); }  break;
+    case XmlRpcValue::TypeString:{  /*  DBG("X->A STR\n"); */ a = (static_cast<string>(v)).c_str(); }  break;
+    case XmlRpcValue::TypeBoolean : { /*   DBG("X->A BOL\n"); */ a = static_cast<bool>(v);  }
     case XmlRpcValue::TypeInvalid : { /*   DBG("X->A Inv\n"); */  a = AmArg();  } break;
       
     case XmlRpcValue::TypeArray: {