--- ray/src/px/ximage.c	1990/01/26 08:17:43	1.23
+++ ray/src/px/ximage.c	1990/10/13 21:31:45	1.25
@@ -407,8 +407,9 @@ XKeyEvent  *ekey;
 			XFeep(0);
 			return(-1);
 		}
-		viewray(rorg, rdir, &ourview, (ekey->x-xoff+.5)/xmax,
-				(ymax-1-ekey->y+yoff+.5)/ymax);
+		if (viewray(rorg, rdir, &ourview, (ekey->x-xoff+.5)/xmax,
+				(ymax-1-ekey->y+yoff+.5)/ymax) < 0)
+			return(-1);
 		printf("%e %e %e ", rorg[0], rorg[1], rorg[2]);
 		printf("%e %e %e\n", rdir[0], rdir[1], rdir[2]);
 		fflush(stdout);
@@ -542,20 +543,20 @@ getmono()			/* get monochrome data */
 	register unsigned short	*dp;
 	register int	x, err;
 	int	y;
-	rgbpixel	*inline;
+	rgbpixel	*inl;
 	short	*cerr;
 
-	if ((inline = (rgbpixel *)malloc(xmax*sizeof(rgbpixel))) == NULL
+	if ((inl = (rgbpixel *)malloc(xmax*sizeof(rgbpixel))) == NULL
 			|| (cerr = (short *)calloc(xmax,sizeof(short))) == NULL)
 		quit("out of memory in getmono");
 	dp = ourras->data.m - 1;
 	for (y = 0; y < ymax; y++) {
-		picreadline3(y, inline);
+		picreadline3(y, inl);
 		err = 0;
 		for (x = 0; x < xmax; x++) {
 			if (!(x&0xf))
 				*++dp = 0;
-			err += rgb_bright(&inline[x]) + cerr[x];
+			err += rgb_bright(&inl[x]) + cerr[x];
 			if (err > 127)
 				err -= 255;
 			else
@@ -563,7 +564,7 @@ getmono()			/* get monochrome data */
 			cerr[x] = err >>= 1;
 		}
 	}
-	free((char *)inline);
+	free((char *)inl);
 	free((char *)cerr);
 }