When RIP changes the vstat mode, also change the cursor

When changing between 8 and 16 row fonts in RIP mode, the cursor
start and end was left for the old font size... 16 -> 8 would leave
the cursor one line below the current position, and 8 -> 16 would
leave the cursor in the middle of the cell.

This hacks the vstat deeper to fix up the cursor as well.

Reported by skipperdoodle1947.

src/syncterm/ripper.c

@@ -10080,6 +10080,7 @@ reinit_screen(uint8_t *font, int fx, int fy)
 	int                   rows = 43;
 	void                 *nvmem;
 	uint32_t lcf;
+	bool fh_change;
 	rip_did_reinit = true;
 	hold_update = 0;
@@ -10098,6 +10099,7 @@ reinit_screen(uint8_t *font, int fx, int fy)
 	if (font == ripfnt16x14)
 		cols = 40;
 	pthread_mutex_lock(&vstatlock);
+	fh_change = fy != vstat.charheight;
 	rows = vstat.scrnheight / fy;
 	if ((font != vstat.forced_font) || (fx != vstat.charwidth) || (fy != vstat.charheight)) {
 		vstat.forced_font = font;
@@ -10105,6 +10107,15 @@ reinit_screen(uint8_t *font, int fx, int fy)
 		vstat.charheight = fy;
 		vstat.cols = cols;
 		vstat.rows = rows;
+		if (fh_change) {
+			if (fy > 8)
+				vstat.default_curs_start = vstat.charheight - 2;
+			else
+				vstat.default_curs_start = vstat.charheight - 1;
+			vstat.default_curs_end = vstat.charheight - 1;
+			vstat.curs_start = vstat.default_curs_start;
+			vstat.curs_end = vstat.default_curs_end;
+		}
                 // We need to update gettextinfo() results as well...
 		cio_textinfo.screenwidth = cols;