Use utils::flush_buffers() in error.cpp and thermo.cpp

src/error.cpp

@@ -213,8 +213,7 @@ void Error::one(const std::string &file, int line, const std::string &str)
 
   throw LAMMPSAbortException(mesg, world);
 #else
-  if (screen) fflush(screen);
-  if (logfile) fflush(logfile);
+  utils::flush_buffers(lmp);
   KokkosLMP::finalize();
   MPI_Abort(world,1);
   exit(1); // to trick "smart" compilers into believing this does not return

src/thermo.cpp

@@ -375,8 +375,7 @@ void Thermo::compute(int flag)
 
   if (me == 0) {
     utils::logmesg(lmp,line);
-    if (screen && flushflag) fflush(screen);
-    if (logfile && flushflag) fflush(logfile);
+    if (flushflag) utils::flush_buffers(lmp);
   }
 
   // set to 1, so that subsequent invocations of CPU time will be non-zero