minor improvements

Author: aviatesk

src/commands.jl

@@ -387,7 +387,7 @@ maybe_reset_frame!(frame::Frame, @nospecialize(pc), rootistoplevel::Bool) =
 # Unwind the stack until an exc is eventually caught, thereby
 # returning the frame that caught the exception at the pc of the catch
 # or rethrow the error
-function unwind_exception(frame::Frame, exc)
+function unwind_exception(frame::Frame, @nospecialize(exc))
     while frame !== nothing
         if !isempty(frame.framedata.exception_frames)
             # Exception caught

src/interpret.jl

@@ -224,7 +224,7 @@ end
 
 function native_call(fargs::Vector{Any}, frame::Frame)
     f = popfirst!(fargs) # now it's really just `args`
-    if !isempty(frame.framedata.current_scopes)
+    if (@static isdefined(Core.IR, :EnterNode) && true) && !isempty(frame.framedata.current_scopes)
         newscope = Core.current_scope()
         for scope in frame.framedata.current_scopes
             newscope = Scope(newscope, scope.values...)