86291555c9
Tcl let me assign two different types of values to the variable $n.
Prior to 1461c5f3 $n was the total number of bytes in the string;
but in that commit it also became the current info list for the
current file. This caused $c < $n to fail as $n was now treated
as 0 and we only loaded the first file in each buffer.
So use a different variable, like $i, instead.
Signed-off-by: Shawn O. Pearce <spearce@spearce.org>