Set ciolib_initial_mode before calling initciolib()

... rather than calling textmode() after.

This solves the problem of black bars above and below the UIFC window in
echocfg and SCFG on ChromeOS, at least.

src/sbbs3/echocfg.c

@@ -888,12 +888,12 @@ int main(int argc, char **argv)
 		}
 	uifc.size=sizeof(uifc);
 	if(!door_mode) {
+		ciolib_initial_mode = video_mode;
 		i=initciolib(ciolib_mode);
 		if(i!=0) {
     		printf("ciolib library init returned error %d\n",i);
     		exit(1);
 		}
-		textmode(video_mode);
 		ciolib_settitle("Synchronet FidoNet Configuration");
     	i=uifcini32(&uifc);  /* curses/conio/X/ANSI */
 	}

src/sbbs3/scfg/scfg.c

@@ -717,12 +717,12 @@ int main(int argc, char **argv)
 	}
 	uifc.size=sizeof(uifc);
 	if(!door_mode) {
+		ciolib_initial_mode = video_mode;
 		i=initciolib(ciolib_mode);
 		if(i!=0) {
     		printf("ciolib library init returned error %d\n",i);
     		exit(1);
 		}
-		textmode(video_mode);
 		ciolib_settitle("Synchronet Configuration");
 		i=uifcini32(&uifc);  /* curses/conio/X/ANSI */
 		if(alt_chars) {