Don't crash when the HTTP request for getting the server status message fails.

MOULOpenSourceClientPlugin/Plasma20/Sources/Plasma/Apps/plClient/winmain.cpp

@@ -1250,6 +1250,7 @@ void StatusCallback(void *param)
 					{
 						static char data[256] = {0};
 						DWORD bytesRead;
+						if(
 							WinHttpSendRequest( 
 								hRequest, 
 								WINHTTP_NO_ADDITIONAL_HEADERS,
@@ -1258,15 +1259,18 @@ void StatusCallback(void *param)
 								0,
 								0,
 								0
-						);
-						WinHttpReceiveResponse(hRequest, 0);
-						WinHttpReadData(hRequest, data, 255, &bytesRead);
+							)
+							&& WinHttpReceiveResponse(hRequest, 0)
+							&& WinHttpReadData(hRequest, data, 255, &bytesRead)
+							&& bytesRead
+						)
+						{
 							data[bytesRead] = 0;
-						if(bytesRead)
 							PostMessage(hwnd, WM_USER_SETSTATUSMSG, 0, (LPARAM) data);
 						}
 					}
 				}
+			}
 			WinHttpCloseHandle(hRequest);
 			WinHttpCloseHandle(hConnect);
 			WinHttpCloseHandle(hSession);