[babl/wip/pippin/inverted-cmyk] babl-space: improve initializiation of sRGB data in cmyk spaces

[Øyvind "pippin" Kolås <ok src gnome org>]

commit 84224259dc5151537e7d6bd82d7ebcdc1d5de069
Author: Øyvind Kolås <pippin gimp org>
Date:   Fri Nov 16 01:51:02 2018 +0100

    babl-space: improve initializiation of sRGB data in cmyk spaces

 babl/babl-space.c | 16 ++++++++++------
 1 file changed, 10 insertions(+), 6 deletions(-)
---
diff --git a/babl/babl-space.c b/babl/babl-space.c
index 4872f3d..fcadc8c 100644
--- a/babl/babl-space.c
+++ b/babl/babl-space.c
@@ -224,8 +224,7 @@ _babl_space_for_lcms (const char *icc_data, int icc_length)
 {
   int i=0;
   BablSpace space;
-  space.instance.class_type = BABL_SPACE;
-  space.instance.id         = 0;
+
 
   for (i = 0; space_db[i].instance.class_type; i++)
   {
@@ -236,6 +235,11 @@ _babl_space_for_lcms (const char *icc_data, int icc_length)
         return (void*)&space_db[i];
     }
   }
+
+  memset (&space, 0, sizeof(space));
+  space.instance.class_type = BABL_SPACE;
+  space.instance.id         = 0;
+
   if (i >= MAX_SPACES-1)
   {
     babl_log ("too many BablSpaces");
@@ -243,10 +247,9 @@ _babl_space_for_lcms (const char *icc_data, int icc_length)
   }
 
   /* initialize it with copy of srgb content */
-  {
+  if(1){
     const BablSpace *srgb = &babl_space("sRGB")->space;
-    BablSpace *space=&space_db[i];
-    memcpy (&space->xw,
+    memcpy (&space.xw,
             &srgb->xw,
 ((char*)&srgb->icc_profile -
 (char*)&srgb->xw));
@@ -1066,7 +1069,8 @@ const Babl *babl_space_match_trc_matrix (const Babl *trc_red,
   for (i = 0; space_db[i].instance.class_type; i++)
   {
     BablSpace *space = &space_db[i];
-    if (trc_red == space->trc[0] &&
+    if (space->cmyk.is_cmyk == 0 &&
+        trc_red == space->trc[0] &&
         trc_green == space->trc[1] &&
         trc_blue == space->trc[2] &&
         fabs(rx - space->RGBtoXYZ[0]) < delta &&