fix a return value bug

src/PlugIn.cpp

@@ -421,7 +421,7 @@ bool PlugIn::OnCompileCommand(const char* cmdline) {
             this->DisplayUserMessage(PLUGIN_NAME, "INFO", "Playback is ignored in AMAN", true, true, false, false, false);
     }
 
-    return false;
+    return retval;
 }
 
 void PlugIn::OnGetTagItem(EuroScopePlugIn::CFlightPlan flightPlan, EuroScopePlugIn::CRadarTarget radarTarget,