Fix past last line redraw

src/toolsrc/ed.pla

@@ -533,9 +533,9 @@ def drawrows(toprow, bottomrow)#0
     huns, tens = divmod(viewtop + toprow + 1, 100)
     tens, ones = divmod(tens, 10)
     for row = toprow to bottomrow
+        conio:gotoxy(0, row)
         scrnrow = row + viewtop
         if scrnrow < numlines
-            conio:gotoxy(0, row)
             if flags & gutter
                 seperator = viewleft ?? '<' :: ' '
                 if flags & selection
@@ -556,12 +556,11 @@ def drawrows(toprow, bottomrow)#0
             strptr = txtlinbuf=>[scrnrow]
             numchars = ^strptr - viewleft
             if numchars >= viewwidth
-                conio:putchars(viewwidth, strptr + viewleft + 1)
-            else
-                conio:putchars(numchars, strptr + viewleft + 1)
-                conio:clear(cleol)
+                numchars = viewwidth
             fin
+            conio:putchars(numchars, strptr + viewleft + 1)
         fin
+        conio:clear(cleol)
     next
 end
 def drawscrn#0