Disable OverrideICC when doing an smask

This temporarily sets pgs->icc_manager->override_internal to TRUE

Basically this causes the ICC color space to be set to match the number
of components (N).  In the sample being debugged, this means the
cmm_icc_profile_data will have a type of default_match = DEFAULT_CMYK
instead of DEFAULT_NONE.

Sample:tests/pdf/smask_withicc.pdf

1 files changed, 4 insertions, 0 deletions

diff --git a/pdf/pdf_trans.c b/pdf/pdf_trans.c
index a27c47082..856fc4a49 100644
--- a/pdf/pdf_trans.c
+++ b/pdf/pdf_trans.c
@@ -98,6 +98,7 @@ static int pdfi_trans_set_mask(pdf_context *ctx, pdfi_int_gstate *igs, int color
     gs_matrix save_matrix, GroupMat, group_Matrix;
     gs_transparency_mask_subtype_t subtype = TRANSPARENCY_MASK_Luminosity;
     pdf_bool *Processed = NULL;
+    bool save_OverrideICC = gs_currentoverrideicc(ctx->pgs);
 
 #if DEBUG_TRANSPARENCY
     dbgmprintf(ctx->memory, "pdfi_trans_set_mask (.execmaskgroup) BEGIN\n");
@@ -115,6 +116,8 @@ static int pdfi_trans_set_mask(pdf_context *ctx, pdfi_int_gstate *igs, int color
         goto exit;
     }
 
+    gs_setoverrideicc(ctx->pgs, true);
+
     /* If /Processed not in the dict, put it there */
     if (code == 0) {
         /* the cleanup at end of this routine assumes Processed has a ref */
@@ -303,6 +306,7 @@ static int pdfi_trans_set_mask(pdf_context *ctx, pdfi_int_gstate *igs, int color
     }
 
  exit:
+    gs_setoverrideicc(ctx->pgs, save_OverrideICC);
     if (gsfunc)
         pdfi_free_function(ctx, gsfunc);
     if (pcs)