jpeg2000: remove unneeded variable initialization

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

libavcodec/jpeg2000.c

@@ -188,7 +188,7 @@ int ff_jpeg2000_init_component(Jpeg2000Component *comp,
 {
     uint8_t log2_band_prec_width, log2_band_prec_height;
     int reslevelno, bandno, gbandno = 0, ret, i, j;
-    uint32_t csize = 1;
+    uint32_t csize;
 
     if (ret = ff_jpeg2000_dwt_init(&comp->dwt, comp->coord,
                                    codsty->nreslevels2decode - 1,