[linux] memset correct area post-scroll

src/lib/linux.c

@@ -195,7 +195,7 @@ void fbcon_scroll(const struct ncpile* p, tinfo* ti, int rows){
   unsigned tocopy = rowbytes * (totalrows - srows);
   memmove(targ, src, tocopy);
   targ += tocopy;
-  memset(targ, 0, srows * rowbytes);
+  memset(src, 0, (totalrows - srows) * rowbytes);
 }
 
 // each row is a contiguous set of bits, starting at the msb

src/lib/render.c

@@ -998,6 +998,7 @@ rasterize_scrolls(const ncpile* p, fbuf* f){
       p->nc->rstate.logendx = 0;
     }
   }
+  // FIXME probably need this to take place at the end of cycle...
   if(p->nc->tcache.pixel_scroll){
     p->nc->tcache.pixel_scroll(p, &p->nc->tcache, scrolls);
   }