Fix listview clearing after update

listview.lua

@@ -37,13 +37,13 @@ local function updateItemAt(idx, item)
     redrawLine(idx)
 end
 
-local function clearAfter(idx)
+local function clearFrom(idx)
     local tw, th = frame.getSize()
-    for j = length, idx+1, -1 do
+    for j = length, idx, -1 do
         backingList[j] = nil
     end
     length = idx
-    for y = paginationOffset-idx+2, th, 1 do
+    for y = idx-paginationOffset+1, th, 1 do
         frame.setCursorPos(1, y)
         frame.clearLine()
     end
@@ -78,7 +78,7 @@ return {
     setDrawLineFunc=setDrawLineFunc,
     itemAt=itemAt,
     updateItemAt=updateItemAt,
-    clearAfter=clearAfter,
+    clearFrom=clearFrom,
     redraw=redraw,
     updatePage=updatePage,
 }

requests.lua

@@ -53,7 +53,7 @@ local function fetch(wait_for)
         end
         wait_for(config.step_sleep_time)
     end
-    listview.clearAfter(currentIdx)
+    listview.clearFrom(currentIdx)
 end
 
 local function drawLine(termlike, obj)