Return loaded ICC colorspace instead of throwing exception.
Return loaded ICC colorspace instead of throwing exception.

commit 169d42e87f8d356f3eba3cbcd577c43bf6967997 removed the
return statement by accident when introducing pdf_cycle detection.

This fixes oss-fuzz 47235.

ArtifexSoftware/mupdf,ArtifexSoftware/mupdf,ArtifexSoftware/mupdf,TamirEvan/mupdf,ArtifexSoftware/mupdf,ArtifexSoftware/mupdf,ArtifexSoftware/mupdf,TamirEvan/mupdf,TamirEvan/mupdf,ArtifexSoftware/mupdf,ArtifexSoftware/mupdf,TamirEvan/mupdf,TamirEvan/mupdf,TamirEvan/mupdf,TamirEvan/mupdf,TamirEvan/mupdf