Revert "Refactor xsetcolorname()"

This reverts commit a32c5f5726.

st.c

@@ -2757,28 +2757,32 @@ xloadcols(void) {
 int
 xsetcolorname(int x, const char *name) {
 	XRenderColor color = { .alpha = 0xffff };
-
+	Colour colour;
 	if(!BETWEEN(x, 0, LEN(colorname)))
 		return -1;
 	if(!name) {
-		if(BETWEEN(x, 16, 6*6*6+16)) { /* 256 colour */
-			color.red   = sixd_to_16bit( ((x-16)/36)%6 );
-			color.green = sixd_to_16bit( ((x-16)/6) %6 );
-			color.blue  = sixd_to_16bit( ((x-16)/1) %6 );
-			if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &color, &dc.col[x]))
-				die("Could not allocate color %d\n", x);
+		if(BETWEEN(x, 16, 16 + 215)) {
+			int r = (x - 16) / 36, g = ((x - 16) % 36) / 6, b = (x - 16) % 6;
+			color.red = sixd_to_16bit(r);
+			color.green = sixd_to_16bit(g);
+			color.blue = sixd_to_16bit(b);
+			if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &color, &colour))
+				return 0; /* something went wrong */
+			dc.col[x] = colour;
 			return 1;
-		} else if(BETWEEN(x, 6*6*6+16, 255)) { /* grayscale */
-			color.red = color.green = color.blue = 0x0808 + 0x0a0a * (x-(6*6*6+16));
-			if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &color, &dc.col[x]))
-				die("Could not allocate color %d\n", x);
+		} else if(BETWEEN(x, 16 + 216, 255)) {
+			color.red = color.green = color.blue = 0x0808 + 0x0a0a * (x - (16 + 216));
+			if(!XftColorAllocValue(xw.dpy, xw.vis, xw.cmap, &color, &colour))
+				return 0; /* something went wrong */
+			dc.col[x] = colour;
 			return 1;
-		} else { /* system colours */
+		} else {
 			name = colorname[x];
 		}
 	}
-	if(!XftColorAllocName(xw.dpy, xw.vis, xw.cmap, name, &dc.col[x]))
-		return 0; /* invalid name */
+	if(!XftColorAllocName(xw.dpy, xw.vis, xw.cmap, name, &colour))
+		return 0;
+	dc.col[x] = colour;
 	return 1;
 }