user: edit.c make sure our vlc (vertical line count) is at least 1 even if there is an oversized font in the edit control

[Juan Lang]

Hi Aric,

Just a suggestion:

@@ -1818,6 +1818,7 @@ static void EDIT_ML_InvalidateText(EDITSTATE
*es, INT start, INT end)
 	RECT rcUpdate;
 	INT l;

+	if (vlc == 0) vlc = 1;
 	if ((el < es->y_offset) || (sl > es->y_offset + vlc))
 		return;

@@ -2235,6 +2236,7 @@ static void EDIT_PaintLine(EDITSTATE *es, HDC
dc, INT line, BOOL rev)

 	if (es->style & ES_MULTILINE) {
 		INT vlc = (es->format_rect.bottom - es->format_rect.top) / es->line_height;
+		if (vlc == 0) vlc = 1;


rather than having to introduce the correction in every place it's
used, replacing the initialization of vlc with a call to an inline
function would reduce the new lines of code (and the probability of
future error.)
--Juan