Fix logfiles not being deleted if captured application is the last user

* Previously only the UI itself would delete the log if it was the last thing to
  close.

renderdoc/common/common.cpp

@@ -292,10 +292,10 @@ void rdclog_enableoutput()
   log_output_enabled = true;
 }
 
-void rdclog_closelog(const char *filename)
+void rdclog_closelog()
 {
   log_output_enabled = false;
-  FileIO::logfile_close(logfileHandle, filename);
+  FileIO::logfile_close(logfileHandle, logfile.c_str());
 }
 
 void rdclog_flush()