Fix incorrect propagation of a COC parameter (DWT transform)

Why: If the DWT transform differs among components, the information of DWT transform used for each component should be found as the COC marker segment. This information is wrongly used for dequantization and rounding in JasPer.
How: Fixed dequantization and rounding in jpc_dec_tiledecode() to use ccp->qmfbid which has the information of DWT transform.

src/libjasper/jpc/jpc_dec.c

@@ -1123,7 +1123,7 @@ static int jpc_dec_tiledecode(jpc_dec_t *dec, jpc_dec_tile_t *tile)
 				}
 				jpc_undo_roi(band->data, band->roishift, ccp->roishift -
 				  band->roishift, band->numbps);
-				if (tile->realmode) {
+				if (ccp->qmfbid == JPC_COX_INS) {
 					jas_matrix_asl(band->data, JPC_FIX_FRACBITS);
 					jpc_dequantize(band->data, band->absstepsize);
 				}
@@ -1169,9 +1169,10 @@ static int jpc_dec_tiledecode(jpc_dec_t *dec, jpc_dec_tile_t *tile)
 	}
 
 	/* Perform rounding and convert to integer values. */
-	if (tile->realmode) {
-		for (compno = 0, tcomp = tile->tcomps; compno < dec->numcomps;
+	for (compno = 0, tcomp = tile->tcomps; compno < dec->numcomps;
 		  ++compno, ++tcomp) {
+		ccp = &tile->cp->ccps[compno];
+		if (ccp->qmfbid == JPC_COX_INS) {
 			for (jas_matind_t i = 0; i < jas_matrix_numrows(tcomp->data); ++i) {
 				for (jas_matind_t j = 0; j < jas_matrix_numcols(tcomp->data); ++j) {
 					v = jas_matrix_get(tcomp->data, i, j);