[kitty] fix off-by-one in write_kitty_data(), ugh

src/lib/kitty.c

@@ -265,9 +265,10 @@ write_kitty_data(FILE* fp, int linesize, int leny, int lenx, int cols,
         const uint32_t* line = data + (linesize / sizeof(*data)) * y;
         source[e] = line[x];
 //fprintf(stderr, "%u/%u/%u -> %c%c%c%c %u %u %u %u\n", r, g, b, b64[0], b64[1], b64[2], b64[3], b64[0], b64[1], b64[2], b64[3]);
-        ++x;
         int tyx = (x / cdimx) + (y / cdimy) * cols;
+//fprintf(stderr, "Tyx: %d y: %d (%d) * %d x: %d (%d)\n", tyx, y, y / cdimy, cols, x, x / cdimx);
         wipe[e] = (tacache[tyx] == SPRIXCELL_ANNIHILATED);
+        ++x;
       }
       totalout += encodeable;
       char out[17];