Stoopid typo in 'full osa' caused the wrong mask value to be sent to the

raytracer. Instead of only tracing the current subpixel it did all
(or most) of them.

Solves reports on slow AO in 2.34, but also will affect ray_mir and transp

source/blender/render/intern/source/rendercore.c

@@ -3206,7 +3206,7 @@ void zbufshadeDA(void)	/* Delta Accum Pixel Struct */
 							if(curmask & (1<<samp)) {
 								xs= (float)x + jit[samp][0];
 								ys= (float)y + jit[samp][1];
-								shadepixel_short(xs, ys, face, curmask, shortcol);
+								shadepixel_short(xs, ys, face, (1<<samp), shortcol);
 			
 								if(shortcol[3]) add_filt_mask(1<<samp, shortcol, rb1, rb2, rb3);
 							}