This fixes a bug in the upstream code.  There is an extra argument in
the call to the x_buffer.CopyToAsync function that must be removed. Otherwise
the build fails when CUDA is enabled.
--- CLBlast/src/routines/level2/xtrsv.cpp	2022-05-21 08:44:13.811816246 -0600
+++ CLBlast_fixed/src/routines/level2/xtrsv.cpp	2022-05-21 08:28:34.601124921 -0600
@@ -154,7 +154,7 @@
   }
 
   // Retrieves the results
-  x_buffer.CopyToAsync(queue_, x_size, b_buffer, event_);
+  x_buffer.CopyToAsync(queue_, x_size, b_buffer);
 }
 
 // =================================================================================================