Add missing sse41::run_pipeline.

In practice this doesn't matter (we'll use sse2::run_pipeline) but the UBSAN bot caught me.

TBR=herb@google.com

GOLD_TRYBOT_URL= https://gold.skia.org/search?issue=3736

Change-Id: Ib40ee4a8ebf274bbc10a78a80e7b1ad06cf644e5
Reviewed-on: https://skia-review.googlesource.com/3736
Commit-Queue: Mike Klein <mtklein@chromium.org>
Reviewed-by: Mike Klein <mtklein@chromium.org>
diff --git a/src/opts/SkOpts_sse41.cpp b/src/opts/SkOpts_sse41.cpp
index 4e277aa..b7f1bdd 100644
--- a/src/opts/SkOpts_sse41.cpp
+++ b/src/opts/SkOpts_sse41.cpp
@@ -21,6 +21,8 @@
         srcover_srgb_srgb    = sse41::srcover_srgb_srgb;
         blit_row_s32a_opaque = sse41::blit_row_s32a_opaque;
 
+        run_pipeline = SK_OPTS_NS::run_pipeline;
+
     #define STAGE(stage)                                                        \
         body[SkRasterPipeline::stage] = (SkOpts::VoidFn)SK_OPTS_NS::stage;      \
         tail[SkRasterPipeline::stage] = (SkOpts::VoidFn)SK_OPTS_NS::stage##_tail