[shotwell] Disable cast checks for ColorTransformation

[Jens Georg <jensgeorg src gnome org>]

commit a050c2b72f51a14db508611dcd980f1a0543b773
Author: Jens Georg <mail jensge org>
Date:   Fri Mar 24 21:59:38 2017 +0100

    Disable cast checks for ColorTransformation
    
    Signed-off-by: Jens Georg <mail jensge org>

 pipeline.am |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)
---
diff --git a/pipeline.am b/pipeline.am
index 4774162..40c5767 100644
--- a/pipeline.am
+++ b/pipeline.am
@@ -19,7 +19,7 @@ src_libgraphics_processor_la_VALAFLAGS = \
        --header=src/shotwell-graphics-processor.h
 
 src_libgraphics_processor_la_CFLAGS = $(SHOTWELL_CFLAGS) $(COMMON_CFLAGS)
-
+src_libgraphics_processor_la_CFLAGS += -DG_DISABLE_CAST_CHECKS
 
 noinst_PROGRAMS = \
        src/shotwell-graphics-processor