fixed bug

shared/url.h

@@ -124,7 +124,8 @@ public:
 					CompleteUrl = string(temp_CompleteUrl, strlen(temp_CompleteUrl));
 					//remove question marks
 					size_t found = CompleteUrl.find("?");
-					CompleteUrl.erase(found, CompleteUrl.size( ));
+					if(found < CompleteUrl.size( ) )
+						CompleteUrl.erase(found, CompleteUrl.size( ));
 
 					Service = string(temp_Service, strlen(temp_Service));
 					Host = string(temp_Host, strlen(temp_Host));