wined3d: Rename texture_stage_op.color_correction to texture_stage_op.color_fixup.

This is consistent with other uses of struct color_fixup_desc.
diff --git a/dlls/wined3d/wined3d_private.h b/dlls/wined3d/wined3d_private.h
index 619baec..f8e2a8c 100644
--- a/dlls/wined3d/wined3d_private.h
+++ b/dlls/wined3d/wined3d_private.h
@@ -935,7 +935,7 @@
     unsigned                aarg2 : 8;
     unsigned                aarg0 : 8;
 
-    struct color_fixup_desc color_correction;
+    struct color_fixup_desc color_fixup;
     unsigned                tex_type : 3;
     unsigned                dst : 1;
     unsigned                projected : 2;